Error codes are five digits codes that help the driver identify possible reasons why the check engine light is flashing.
The check engine light alerts the driver that a fault needs to be fixed. It doesn’t categorically state the problem.
The function of the Onboard diagnostic scanner is to read and point out all the codes on a car with the specific location of the fault.
There are four categories of Error codes: P, B, C, and U, representing Powertrain, Body, Chassis, and Unknown, respectively.
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The P (Power train) Error codes are the most popular among them since it concerns the engine and other components that make up the proper functionality of the car.
However, the U Error Codes also play an essential role in the car’s makeup since they specify faults in a vehicle’s internet, software, and communication modules.
In this article, I’ll provide you with the complete list of Error codes starting with the U prefix and where the fault can be spotted.
List of OBD-II U Error Codes
U Error Codes range from U0000 to U4000, with a section for generic codes and manufacturer-specific errors.
From U0000 to U1000 and U3000 to U4000 are generic codes set to international standards (ISO/SAE) to create a secure life cycle in the automotive sector.
While codes between U1000 to U3000 are manufacturer specific, the regulations here may differ from the ones set by your car manufacturers.
Nevertheless, consult your car manual or manufacturer’s website to find the tailored fixes for your car.
Without wasting much time, here’s a complete list of OBD-II U trouble codes.
| U Codes | ||
|---|---|---|
| Trouble Code | Fault Spots | |
| U0000 – U0099 (Network Electrical) | ||
| U0001 | Controller area network (CAN) data bus: high-speed bus/communication control module | |
| U0002 | Controller area network (CAN) data bus: high-speed bus – performance problem/ configuration error | |
| U0003 | Controller area network (CAN) data bus: high-speed bus(+)- open circuit | |
| U0004 | Controller area network (CAN) data bus: high-speed bus(+)- voltage low | |
| U0005 | Controller area network (CAN) data bus: high-speed bus(+)- voltage high | |
| U0006 | Controller area network (CAN) data bus: high-speed bus(-)- open circuit | |
| U0007 | Controller area network (CAN) data bus: high-speed bus (-)-voltage low | |
| U0008 | Controller area network (CAN) data bus: high-speed bus(-)- voltage high | |
| U0009 | Controller area network (CAN) data bus: high-speed bus (-)-shorted to the data bus(+) | |
| U0010 | Controller area network (CAN) data bus: medium-speed bus | |
| U0011 | Controller area network (CAN) data bus: medium speed bus – performance problem | |
| U0012 | Controller area network (CAN) data bus: medium speed bus(+)- open circuit | |
| U0013 | Controller area network (CAN) data bus: medium speed bus(+)- voltage low | |
| U0014 | Controller area network (CAN) data bus: medium speed bus(+)- voltage high | |
| U0015 | Controller area network (CAN) data bus: medium speed bus(-) | |
| U0016 | Controller area network (CAN) data bus: medium speed bus(-)- voltage low | |
| U0017 | Controller area network (CAN) data bus: medium speed bus(-)- voltage high | |
| U0018 | Controller area network (CAN) data bus: medium speed bus (-)-shorted to the data bus(+) | |
| U0019 | Controller area network (CAN) data bus: low-speed bus | |
| U0020 | Controller area network (CAN) data bus: low-speed bus – performance problem | |
| U0021 | Controller area network (CAN) data bus: low-speed bus (+) – open circuit | |
| U0022 | Controller area network (CAN) data bus: low-speed bus (+) – voltage low | |
| U0023 | Controller area network (CAN) data bus: low-speed bus (+) – voltage high | |
| U0024 | Controller area network (CAN) data bus: low-speed bus (-) – open circuit | |
| U0025 | Controller area network (CAN) data bus: low-speed bus (-) – voltage low | |
| U0026 | Controller area network (CAN) data bus: low-speed bus (-) – voltage high | |
| U0027 | Controller area network (CAN) data bus: low-speed bus (-) – shorted to the data bus (+) | |
| U0028 | Vehicle area network (VAN) data bus A | |
| U0029 | Vehicle area network (VAN) data bus A – performance problem | |
| U0030 | Vehicle area network (VAN) data bus A (+)- open circuit | |
| U0031 | Vehicle area network (VAN) data bus A (+)- voltage low | |
| U0032 | Vehicle area network (VAN) data bus A (+)- voltage high | |
| U0033 | Vehicle area network (VAN) data bus A (-)- open circuit | |
| U0034 | Vehicle area network (VAN) data bus A (-)- voltage low | |
| U0035 | Vehicle area network (VAN) data bus A (-)- voltage high | |
| U0036 | Vehicle area network (VAN) data bus A (-)- shorted to data bus A (+) | |
| U0037 | Vehicle area network (VAN) data bus B | |
| U0038 | Vehicle area network (VAN) data bus B – performance problem | |
| U0039 | Vehicle area network (VAN) data bus B (+)- open circuit | |
| U0040 | Vehicle area network (VAN) data bus B (+)- voltage low | |
| U0041 | Vehicle area network (VAN) data bus B (+)- voltage high | |
| U0042 | Vehicle area network (VAN) data bus B (-)- open circuit | |
| U0043 | Vehicle area network (VAN) data bus B (-)- voltage low | |
| U0044 | Vehicle area network (VAN) data bus B (-)- voltage high | |
| U0045 | Vehicle area network (VAN) data bus B (-)- shorted to data bus B (+) | |
| U0046 | Vehicle area network (VAN) data bus C | |
| U0047 | Vehicle area network (VAN) data bus C – performance problem | |
| U0048 | Vehicle area network (VAN) data bus C (+)- open circuit | |
| U0049 | Vehicle area network (VAN) data bus C (+)- voltage low | |
| U0050 | Vehicle area network (VAN) data bus C (+)- voltage high | |
| U0051 | Vehicle area network (VAN) data bus C (-)- open circuit | |
| U0052 | Vehicle area network (VAN) data bus C (-)- voltage low | |
| U0053 | Vehicle area network (VAN) data bus C (-)- voltage high | |
| U0054 | Vehicle area network (VAN) data bus C (-)- shorted to data bus C (+) | |
| U0055 | Vehicle area network (VAN) data bus D | |
| U0056 | Vehicle area network (VAN) data bus D- performance problem | |
| U0057 | Vehicle area network (VAN) data bus D (+)- open circuit | |
| U0058 | Vehicle area network (VAN) data bus D (+)- voltage low | |
| U0059 | Vehicle area network (VAN) data bus D (+)- voltage high | |
| U0060 | Vehicle area network (VAN) data bus D (-)- open circuit | |
| U0061 | Vehicle area network (VAN) data bus D (-)- voltage low | |
| U0062 | Vehicle area network (VAN) data bus D (-)- voltage high | |
| U0063 | Vehicle area network (VAN) data bus D (-)- shorted to data bus D (+) | |
| U0064 | Vehicle area network (VAN) data bus E | |
| U0065 | Vehicle area network (VAN) data bus E – performance problem | |
| U0066 | Vehicle area network (VAN) data bus E (+)- open circuit | |
| U0067 | Vehicle area network (VAN) data bus E (+)- voltage low | |
| U0068 | Vehicle area network (VAN) data bus E (+)- voltage high | |
| U0069 | Vehicle area network (VAN) data bus E (-)- open circuit | |
| U0070 | Vehicle area network (VAN) data bus E (-)- voltage low | |
| U0071 | Vehicle area network (VAN) data bus E (-)- voltage high | |
| U0072 | Vehicle area network (VAN) data bus E (-)- shorted to data bus E (+) | |
| U0073 | Control module – data bus Off | |
| U0100 – U0199 (Network communications) | ||
| U0100 | Data bus: engine control module (ECM) A – no communication | |
| U0101 | Data bus: transmission control module (TCM) – no communication | |
| U0102 | Data bus: transfer box control module – no communication | |
| U0103 | Data bus: gear shift module – no communication / System relay – low signal | |
| U0104 | Data bus: cruise control module – no communication | |
| U0105 | Data bus: injector control module – no communication | |
| U0106 | Data bus: glow plug control module – no communication | |
| U0107 | Data bus: throttle actuator control (TAC) module – no communication | |
| U0108 | Data bus: alternative fuel control module – no communication | |
| U0109 | Data bus: fuel pump (FP) control module – no communication | |
| U0110 | Data bus: drive motor control module – no communication | |
| U0111 | Data bus: battery energy control module A – no communication | |
| U0112 | Data bus: battery energy control module B – no communication | |
| U0113 | Data bus: emissions critical control information – no communication | |
| U0114 | Data bus: four-wheel drive clutch control module – no communication | |
| U0115 | Data bus: engine control module (ECM) B – no communication | |
| U0121 | Data bus: anti-lock brake system (ABS) control module – no communication | |
| U0122 | Data bus: vehicle dynamics control module – no communication | |
| U0123 | Data bus: yaw rate sensor module – no communication | |
| U0124 | Data bus: lateral acceleration sensor module – no communication | |
| U0125 | Data bus: multi-axis acceleration sensor module – no communication | |
| U0126 | Data bus: steering position sensor control module – no communication | |
| U0127 | Data bus: tire pressure monitor module- no communication | |
| U0128 | Data bus: parking brake control module – no communication | |
| U0129 | Data bus: brake system control module – no communication | |
| U0130 | Data bus: steering effort control module – no communication | |
| U0131 | Data bus: power steering control module – no communication | |
| U0132 | Data bus: suspension ride height control module – no communication | |
| U0140 | Data bus: body control module (8CM)- no communication | |
| U0141 | Data bus: body control module (8CM) A- no communication | |
| U0142 | Data bus: body control module (8CM) 8 – no communication | |
| U0143 | Data bus: body control module (8CM) C- no communication | |
| U0144 | Data bus: body control module (8CM) D- no communication | |
| U0145 | Data bus: body control module (8CM) E – no communication | |
| U0146 | Data bus: gateway A- no communication | |
| U0147 | Data bus: gateway 8 – no communication | |
| U0148 | Data bus: gateway C – no communication | |
| U0149 | Data bus: gateway D- no communication | |
| U0150 | Data bus: gateway E – no communication | |
| U0151 | Data bus: supplementary restraint system (SRS) control module – no communication | |
| U0152 | Data bus: supplementary restraint system (SRS) control module: left – no communication | |
| U0153 | Data bus: supplementary restraint system (SRS) control module: right – no communication | |
| U0154 | Data bus: supplementary restraint system (SRS) occupant sensing control module- no communication | |
| U0155 | Data bus: instrumentation control module – no communication | |
| U0156 | Data bus: information center A – no communication | |
| U0157 | Data bus: information center B – no communication | |
| U0158 | Data bus: head-up display – no communication | |
| U0159 | Data bus: parking aid control module A – no communication | |
| U0160 | Data bus: audible alert control module – no communication | |
| U0161 | Data bus: compass module – no communication | |
| U0162 | Data bus: navigation display module – no communication | |
| U0163 | Data bus: navigation control module – no communication | |
| U0164 | Data bus: NC control module – no communication | |
| U0165 | Data bus: NC control module: rear | |
| U0166 | Data bus: auxiliary heater control module – no communication | |
| U0167 | Data bus: immobilizer control’ module – no communication / Engine control module – internal fault | |
| U0168 | Data bus: alarm system control module – no communication | |
| U0169 | Data bus: sunroof control module – no communication | |
| U0170 | Data bus: supplementary restraint system (SRS) sensor A – no communication | |
| U0171 | Data bus: supplementary restraint system (SRS) sensor B – no communication | |
| U0172 | Data bus: supplementary restraint system (SRS) sensor C – no communication | |
| U0173 | Data bus: supplementary restraint system (SRS) sensor D – no communication | |
| U0174 | Data bus: supplementary restraint system (SRS) sensor E – no communication | |
| U0175 | Data bus: supplementary restraint system (SRS) sensor F – no communication | |
| U0176 | Data bus: supplementary restraint system (SRS) sensor G – no communication | |
| U0177 | Data bus: supplementary restraint system (SRS) sensor H – no communication | |
| U0178 | Data bus: supplementary restraint system (SRS) sensor I – no communication | |
| U0179 | Data bus: supplementary restraint system (SRS) sensor J – no communication | |
| U0180 | Data bus: automatic lighting control module – no communication | |
| U0181 | Data bus: headlamp level control module – no communication | |
| U0182 | Data bus: lamps control module: front – no communication | |
| U0183 | Data bus: lamps control module: rear- no communication | |
| U0184 | Data bus: radio – no communication | |
| U0185 | Data bus: aerial module – no communication | |
| U0186 | Data bus: audio unit output amplifier- no communication | |
| U0187 | Data bus: digital disc player/changer module A – no communication | |
| U0188 | Data bus: digital disc player/changer module B – no communication | |
| U0189 | Data bus: digital disc player/changer module C – no communication | |
| U0190 | Data bus: digital disc player/changer module D – no communication | |
| U0191 | Data bus: television – no communication | |
| U0192 | Data bus: personal computer – no communication | |
| U0193 | Data bus: digital audio control module A- no communication | |
| U0194 | Data bus: digital audio control module B – no communication | |
| U0195 | Data bus: subscription entertainment receiver module – no communication | |
| U0196 | Data bus: entertainment control module: rear – no communication | |
| U0197 | Data bus: t.elephone control module – no communication | |
| U0198 | Data bus: telematics control module – no communication | |
| U0199 | Data bus: door function control module A – no communication | |
| U0200 – U0299 (Network communications) | ||
| U0200 | Data bus: door function control module B – no communication | |
| U0201 | Data bus: door function control module C – no communication | |
| U0202 | Data bus: door function control module D – no communication | |
| U0203 | Data bus: door function control module E – no communication | |
| U0204 | Data bus: door function control module F – no communication | |
| U0205 | Data bus: door function control module G – no communication | |
| U0206 | Data bus: convertible top control module – no communication | |
| U0207 | Data bus: moveable roof control module – no communication | |
| U0208 | Data bus: seat adjustment control module A – no communication | |
| U0209 | Data bus: seat adjustment control module B – no communication | |
| U0210 | Data bus: seat adjustment control module C – no communication | |
| U0211 | Data bus: seat adjustment control module D – no communication | |
| U0212 | Data bus: steering column control module – no communication | |
| U0213 | Data bus: mirror control module A – no communication | |
| U0214 | Data bus: remote function actuation – no communication | |
| U0215 | Data bus: door contact switch A – no communication | |
| U0216 | Data bus: door contact switch B – no communication | |
| U0217 | Data bus: door contact switch C – no communication | |
| U0218 | Data bus: door contact switch D – no communication | |
| U0219 | Data bus: door contact switch E – no communication | |
| U0220 | Data bus: door contact switch F – no communication | |
| U0221 | Data bus: door contact switch G – no communication | |
| U0222 | Data bus: electric window motor A- no communication | |
| U0223 | Data bus: electric window motor B – no communication | |
| U0224 | Data bus: electric window motor C – no communication | |
| U0225 | Data bus: electric window motor D – no communication | |
| U0226 | Data bus: electric window motor E – no communication | |
| U0227 | Data bus: electric window motor F – no communication | |
| U0228 | Data bus: electric window motor G – no communication | |
| U0229 | Data bus: heated steering wheel module – no communication | |
| U0230 | Data bus: tailgate control module – no communication | |
| U0231 | Data bus: rain sensor control module- no communication | |
| U0232 | Data bus: side obstacle detection control module: left – no communication | |
| U0233 | Data bus: side obstacle detection control module: right- no communication | |
| U0234 | Data bus: convenience recall module – no communication | |
| U0235 | Data bus: cruise control front distance range sensor – no communication | |
| U0253 | Lost Communication With Accessory Protocol Interface Module | |
| U0284 | Lost Communication With Active Grille Air Shutter 1 Motor Module | |
| U0293 | Data bus: HVAC control unit- no communication | |
| U029D | Lost Communication With NOX Sensor A | |
| P0300 – U0399 (Network software) | ||
| U0300 | Control module – internal software incompatibility | |
| U0301 | Software incompatibility – engine control module (ECM) | |
| U0302 | Software incompatibility – transmission control module (TCM) | |
| U0303 | Software incompatibility – transfer box control module | |
| U0304 | Software incompatibility – gear shift module | |
| U0305 | Software incompatibility – cruise control module | |
| U0306 | Software incompatibility – injector control module | |
| U0307 | Software incompatibility – glow plug control module | |
| U0308 | Software incompatibility – throttle actuator control (TAC) module | |
| U0309 | Software incompatibility – alternative fuel control module | |
| U0310 | Software incompatibility – fuel pump (FP) control module | |
| U0311 | Software incompatibility – drive motor control module | |
| U0312 | Software incompatibility – battery energy control module A | |
| U0313 | Software incompatibility – battery energy control module B | |
| U0314 | Software incompatibility – four-wheel drive clutch control module | |
| U0315 | Software incompatibility – anti-lock brake system (ASS) control module | |
| U0316 | Software incompatibility – vehicle dynamics control module | |
| U0317 | Software incompatibility – parking brake control module | |
| U0318 | Software incompatibility – brake system control module | |
| U0319 | Software incompatibility – steering effort control module | |
| U0320 | Software incompatibility – power steering control module | |
| U0321 | Software incompatibility – suspension ride height control module | |
| U0322 | Software incompatibility – body control module | |
| U0323 | Software incompatibility – instrumentation control module | |
| U0324 | Software incompatibility – AlC control module | |
| U0325 | Software incompatibility – auxiliary heater control module | |
| U0326 | Software incompatibility – immobilizer control module | |
| U0327 | Software incompatibility – alarm system control module | |
| U0328 | Software incompatibility – steering position sensor control module | |
| U0329 | Software incompatibility – steering column control module | |
| U0330 | Software incompatibility – tire pressure monitor module | |
| U0331 | Software incompatibility – body control module A | |
| U0332 | Software incompatibility – multi-axis acceleration sensor module | |
| P0400 – U0499 (Network data) | ||
| U0400 | Invalid data received | |
| U0401 | Invalid data received – engine control module (ECM) | |
| U0402 | Invalid data received – transmission control module (TCM) | |
| U0403 | Invalid data received – transfer box control module | |
| U0404 | Invalid data received – gear shift module | |
| U0405 | Invalid data received – cruise control module | |
| U0406 | Invalid data received – injector control module | |
| U0407 | Invalid data received – glow plug control module | |
| U0408 | Invalid data received – throttle actuator control (TAC) module | |
| U0409 | Invalid data received – alternative fuel control module | |
| U0410 | Invalid data received – fuel pump (FP) control module | |
| U0411 | Invalid data received -drive motor control module | |
| U0412 | Invalid data received – battery energy control module A | |
| U0413 | Invalid data received – battery energy control module B | |
| U0414 | Invalid data received – four-wheel drive clutch control module | |
| U0415 | Invalid data received – anti-lock brake system (ABS) control module | |
| U0416 | Invalid data received – vehicle dynamics control module | |
| U0417 | Invalid data received – parking brake control module | |
| U0418 | Invalid data received – brake system control module | |
| U0419 | Invalid data received – steering effort control module | |
| U0420 | Invalid data received – power steering control module | |
| U0421 | Invalid data received – suspension ride height control module | |
| U0422 | Invalid data received – body control module | |
| U0423 | Invalid data received – instrumentation control module | |
| U0424 | Invalid data received – A/C control module | |
| U0425 | Invalid data received – auxiliary heater control module | |
| U0426 | Invalid data received – immobilizer | |
| U0427 | Invalid data received – alarm system control module | |
| U0428 | Invalid data received – steering position sensor control module | |
| U0429 | Invalid data received – steering column control module | |
| U0430 | Invalid data received – tire pressure monitor module | |
| U0431 | Invalid data received – body control module A | |
| U0433 | Invalid data received – cruise control front distance range sensor | |
| U0481 | Invalid Data Received From Automatic Lighting Control Module | |
| U1000 – U2000 (Manufacturer defined, common definition listed) | ||
| U1000 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1001 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1002 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1003 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1004 | SCP (J1850) Invalid or Missing Data for EEC Programming | |
| U1005 | SCP (J1850) Invalid or Missing Data for EEC Programming | |
| U1006 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1007 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1008 | SCP (J1850) Invalid or Missing Data for Engine Torque | |
| U1009 | SCP (J1850) Invalid or Missing Data for Engine Torque | |
| U1010 | SCP (J1850) Invalid or Missing Data for Engine Air Intake | |
| U1011 | SCP (J1850) Invalid or Missing Data for Engine Air Intake | |
| U1012 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1013 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1014 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1015 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1016 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1017 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1018 | SCP (J1850) Invalid or Missing Data for Throttle | |
| U1019 | SCP (J1850) Invalid or Missing Data for Throttle | |
| U1020 | SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch | |
| U1021 | SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch | |
| U1022 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1023 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1024 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1025 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1026 | SCP (J1850) Invalid or Missing Data for Engine RPM | |
| U1027 | SCP (J1850) Invalid or Missing Data for Engine RPM | |
| U1028 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1029 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1030 | SCP (J1850) Invalid or Missing Data for Experimental #1 | |
| U1031 | SCP (J1850) Invalid or Missing Data for Experimental #1 | |
| U1032 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1033 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1034 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1035 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1036 | SCP (J1850) Invalid or Missing Data for Wheels | |
| U1037 | SCP (J1850) Invalid or Missing Data for Wheels | |
| U1038 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1039 | SCP (J1850) Invalid or Missing Data for Primary Id / Vehicle Speed | |
| U1040 | SCP (J1850) Invalid or Missing Data for Vehicle Speed | |
| U1041 | SCP (J1850) Invalid or Missing Data for Vehicle Speed | |
| U1042 | SCP (J1850) Invalid or Missing Data for Traction Control | |
| U1043 | SCP (J1850) Invalid or Missing Data for Traction Control | |
| U1044 | SCP (J1850) Invalid or Missing Data for Traction Motor | |
| U1045 | SCP (J1850) Invalid or Missing Data for Traction Motor | |
| U1046 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1047 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1048 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1049 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1050 | SCP (J1850) Invalid or Missing Data for Brakes | |
| U1051 | SCP (J1850) Invalid or Missing Data for Brakes | |
| U1052 | SCP (J1850) Invalid or Missing Data for Steering / Steering Wheel | |
| U1053 | SCP (J1850) Invalid or Missing Data for Steering / Steering Wheel | |
| U1054 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1055 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1056 | SCP (J1850) Invalid or Missing Data for Vehicle Configuration | |
| U1057 | SCP (J1850) Invalid or Missing Data for Vehicle Configuration | |
| U1058 | SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL | |
| U1059 | SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL | |
| U1060 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1061 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1062 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1063 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1064 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1065 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1066 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1067 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1068 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1069 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1070 | SCP (J1850) Invalid or Missing Data for Engine Sensors | |
| U1071 | SCP (J1850) Invalid or Missing Data for Engine Sensors | |
| U1072 | SCP (J1850) Invalid or Missing Data for Engine Coolant | |
| U1073 | Bus-Off (Mitsubishi) SCP (J1850) Invalid or Missing Data for Engine Coolant (GM) SCP (J1850) Invalid or Missing Data for Engine Coolant (Ford) |
|
| U1074 | SCP (J1850) Invalid or Missing Data for Engine Oil | |
| U1075 | SCP (J1850) Invalid or Missing Data for Engine Oil Temp | |
| U1076 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1077 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1078 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1079 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1080 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1081 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1082 | SCP (J1850) Invalid or Missing Data for Engine Systems Other | |
| U1083 | SCP (J1850) Invalid or Missing Data for Engine Systems Other | |
| U1084 | SCP (J1850) Invalid or Missing Data for Powertrain Status Request | |
| U1085 | SCP (J1850) Invalid or Missing Data for Powertrain Status Request | |
| U1086 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1087 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1088 | SCP (J1850) Invalid or Missing Data for Suspension | |
| U1089 | SCP (J1850) Invalid or Missing Data for Suspension | |
| U1090 | SCP (J1850) Invalid or Missing Data for Non-Legislated Diagnostics | |
| U1091 | SCP (J1850) Invalid or Missing Data for Non-Legislated Diagnostics | |
| U1092 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1093 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1094 | SCP (J1850) Invalid or Missing Data for Experimental #2 | |
| U1095 | SCP (J1850) Invalid or Missing Data for Experimental #2 | |
| U1096 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1097 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1098 | SCP (J1850) Invalid or Missing Data for Vehicle Speed Control | |
| U1099 | SCP (J1850) Invalid or Missing Data for Vehicle Speed Control | |
| U1100 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1101 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1102 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1103 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1104 | SCP (J1850) Invalid or Missing Data for Chassis Status Request | |
| U1105 | SCP (J1850) Invalid or Missing Data for Chassis Status Request | |
| U1106 | SCP (J1850) Invalid or Missing Data for Legislated Diagnostics | |
| U1107 | SCP (J1850) Invalid or Missing Data for Legislated Diagnostics | |
| U1108 | SCP (J1850) Invalid or Missing Data for Electric Traction Drive (Inverter) | |
| U1109 | SCP (J1850) Invalid or Missing Data for Electric Traction Drive (Inverter) | |
| U1110 | A/C-ECU Timeout | |
| U1111 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1112 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1113 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1114 | SCP (J1850) Invalid or Missing Data for Charging System | |
| U1115 | SCP (J1850) Invalid or Missing Data for Charging System | |
| U1116 | SCP (J1850) Invalid or Missing Data for Electrical Energy Management | |
| U1117 | SCP (J1850) Invalid or Missing Data for Electrical Energy Management | |
| U1118 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1119 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1120 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1121 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1122 | SCP (J1850) Invalid or Missing Data for Odometer | |
| U1123 | SCP (J1850) Invalid or Missing Data for Odometer | |
| U1124 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1125 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1126 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1127 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1128 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1129 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1130 | SCP (J1850) Invalid or Missing Data for Fuel System | |
| U1131 | SCP (J1850) Invalid or Missing Data for Fuel System | |
| U1132 | SCP (J1850) Invalid or Missing Data for Vehicle Motion | |
| U1133 | SCP (J1850) Invalid or Missing Data for Vehicle Motion | |
| U1134 | SCP (J1850) Invalid or Missing Data for Ignition Switch / Starter | |
| U1135 | SCP (J1850) Invalid or Missing Data for Ignition Switch / Starter | |
| U1136 | SCP (J1850) Invalid or Missing Data for Telltales | |
| U1137 | SCP (J1850) Invalid or Missing Data for Telltales | |
| U1138 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1139 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1140 | SCP (J1850) Invalid or Missing Data for Gateway | |
| U1141 | SCP (J1850) Invalid or Missing Data for Gateway | |
| U1142 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1143 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1144 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1145 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1146 | SCP (J1850) Invalid or Missing Data for Vehicle Security | |
| U1147 | SCP (J1850) Invalid or Missing Data for Vehicle Security | |
| U1148 | SCP (J1850) Invalid or Missing Data for Audio Control | |
| U1149 | SCP (J1850) Invalid or Missing Data for Audio Control | |
| U1150 | SCP (J1850) Invalid or Missing Data for Audible Warnings | |
| U1151 | SCP (J1850) Invalid or Missing Data for Audible Warnings | |
| U1152 | SCP (J1850) Invalid or Missing Data for Experimental #3 | |
| U1153 | SCP (J1850) Invalid or Missing Data for Experimental #3 | |
| U1154 | SCP (J1850) Invalid or Missing Data for Compact Disc | |
| U1155 | SCP (J1850) Invalid or Missing Data for Compact Disc | |
| U1156 | SCP (J1850) Invalid or Missing Data for Digital Signal Processing | |
| U1157 | SCP (J1850) Invalid or Missing Data for Digital Signal Processing | |
| U1158 | SCP (J1850) Invalid or Missing Data for Antenna | |
| U1159 | SCP (J1850) Invalid or Missing Data for Antenna | |
| U1160 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1161 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1162 | SCP (J1850) Invalid or Missing Data for Digital Audio Tape | |
| U1163 | SCP (J1850) Invalid or Missing Data for Digital Audio Tape | |
| U1164 | SCP (J1850) Invalid or Missing Data for Tuner / Receiver | |
| U1165 | SCP (J1850) Invalid or Missing Data for Tuner / Receiver | |
| U1166 | SCP (J1850) Invalid or Missing Data for Cassette Tape | |
| U1167 | SCP (J1850) Invalid or Missing Data for Cassette Tape | |
| U1168 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1169 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1170 | SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System | |
| U1171 | SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System | |
| U1172 | SCP (J1850) Invalid or Missing Data for Remote Button Control | |
| U1173 | SCP (J1850) Invalid or Missing Data for Remote Button Control | |
| U1174 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1175 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1176 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1177 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1178 | SCP (J1850) Invalid or Missing Data for Climate Control (HVAC) | |
| U1179 | SCP (J1850) Invalid or Missing Data for Climate Control (HVAC) | |
| U1180 | SCP (J1850) Invalid or Missing Data for Personalization (Memory) Features | |
| U1181 | SCP (J1850) Invalid or Missing Data for Personalization (Memory) Features | |
| U1182 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1183 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1184 | SCP (J1850) Invalid or Missing Data for Window Wiper / Washer | |
| U1185 | SCP (J1850) Invalid or Missing Data for Window Wiper / Washer | |
| U1186 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1187 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1188 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1189 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1190 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1191 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1192 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1193 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1194 | SCP (J1850) Invalid or Missing Data for Mirrors | |
| U1195 | SCP (J1850) Invalid or Missing Data for Mirrors | |
| U1196 | SCP (J1850) Invalid or Missing Data for Door Locks | |
| U1197 | SCP (J1850) Invalid or Missing Data for Door Locks | |
| U1198 | SCP (J1850) Invalid or Missing Data for External Access (Doors) | |
| U1199 | SCP (J1850) Invalid or Missing Data for External Access (Doors) | |
| U1200 | SCP (J1850) Invalid or Missing Data for Seat Motion / Control | |
| U1201 | SCP (J1850) Invalid or Missing Data for Seat Motion / Control | |
| U1202 | SCP (J1850) Invalid or Missing Data for Windows | |
| U1203 | SCP (J1850) Invalid or Missing Data for Windows | |
| U1204 | SCP (J1850) Invalid or Missing Data for Steering Column | |
| U1205 | SCP (J1850) Invalid or Missing Data for Steering Column | |
| U1206 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1207 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1208 | SCP (J1850) Invalid or Missing Data for Seat Switches | |
| U1209 | SCP (J1850) Invalid or Missing Data for Seat Switches | |
| U1210 | SCP (J1850) Invalid or Missing Data for Restraints | |
| U1211 | SCP (J1850) Invalid or Missing Data for Restraints | |
| U1212 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1213 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1214 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1215 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1216 | SCP (J1850) Invalid or Missing Data for External Lamp Outage | |
| U1217 | SCP (J1850) Invalid or Missing Data for External Lamp Outage | |
| U1218 | SCP (J1850) Invalid or Missing Data for External Lamps | |
| U1219 | SCP (J1850) Invalid or Missing Data for External Lamps | |
| U1220 | SCP (J1850) Invalid or Missing Data for Interior Lamp Outage | |
| U1221 | SCP (J1850) Invalid or Missing Data for Interior Lamp Outage | |
| U1222 | SCP (J1850) Invalid or Missing Data for Interior Lamps | |
| U1223 | SCP (J1850) Invalid or Missing Data for Interior Lamps | |
| U1224 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1225 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1226 | SCP (J1850) Invalid or Missing Data for Body Status Request | |
| U1227 | SCP (J1850) Invalid or Missing Data for Body Status Request | |
| U1228 | SCP (J1850) Invalid or Missing Data for Tires | |
| U1229 | SCP (J1850) Invalid or Missing Data for Tires | |
| U1230 | SCP (J1850) Invalid or Missing Data for Electric Defrost | |
| U1231 | SCP (J1850) Invalid or Missing Data for Electric Defrost | |
| U1232 | SCP (J1850) Invalid or Missing Data for Navigation | |
| U1233 | SCP (J1850) Invalid or Missing Data for Navigation | |
| U1234 | SCP (J1850) Invalid or Missing Data for Displays | |
| U1235 | SCP (J1850) Invalid or Missing Data for Displays | |
| U1236 | SCP (J1850) Invalid or Missing Data for Memory Storage | |
| U1237 | SCP (J1850) Invalid or Missing Data for Memory Storage | |
| U1238 | SCP (J1850) Invalid or Missing Data for Experimental #4 | |
| U1239 | SCP (J1850) Invalid or Missing Data for Experimental #4 | |
| U1240 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1241 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1242 | SCP (J1850) Invalid or Missing Data for Exterior Environment | |
| U1243 | SCP (J1850) Invalid or Missing Data for Exterior Environment | |
| U1244 | SCP (J1850) Invalid or Missing Data for Interior Environment | |
| U1245 | SCP (J1850) Invalid or Missing Data for Interior Environment | |
| U1246 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1247 | SCP (J1850) Invalid or Missing Data for Primary Id | |
| U1248 | SCP (J1850) Invalid or Missing Data for Time / Date | |
| U1249 | SCP (J1850) Invalid or Missing Data for Time / Date | |
| U1250 | SCP (J1850) Invalid or Missing Data for Vehicle Id (VIN) | |
| U1251 | SCP (J1850) Invalid or Missing Data for Vehicle Id (VIN) | |
| U1252 | SCP (J1850) Invalid or Missing Data for Class A Functions | |
| U1253 | SCP (J1850) Invalid or Missing Data for Class A Functions | |
| U1254 | SCP (J1850) Invalid or Missing Data for Network Control | |
| U1255 | SCP (J1850) Invalid or Missing Data for Network Control | |
| U1260 | SCP (J1850) Single-Ended (+) Circuit Failure | |
| U1261 | SCP (J1850) Single-Ended (-) Circuit Failure | |
| U1262 | SCP (J1850) Communication Bus Fault | |
| U1308 | SCP (J1850) Invalid or Missing Data for Function Read Engine Torque | |
| U1313 | CAN-LS Monitor Data Abnormal (Subaru) | |
| U1341 | SCP (J1850) Invalid or Missing Data for Function Read Vehicle Speed | |
| U140A | Implausible Right Front Wheel Speed Signal Received (Jeep) | |
| U1412 | Implausible Vehicle Speed Signal Received | |
| U1417 | Implausible Left Wheel Distance Signal (Dodge, Chrysler, Jeep) | |
| U1418 | Implausible Left Wheel Distance Signal Received (Chrysler, Dodge, Jeep) | |
| U1430 | SCP (J1850) Invalid or Missing Data for Function Read Fuel System | |
| U1451 | SCP (J1850) Invalid or Missing Data for Function Read Audible Warnings /Anti-Theft Module | |
| U1600 | Electronic key-immobilizer system fault (Fiat, Alpha Romeo, Audi, Nissan) | |
| U1612 | SCP (J1850) Lack of Acknowledgment for Primary Id | |
| U1736 | SCP (J1850) Lack of Acknowledgment for Telltales | |
| U1750 | SCP (J1850) Lack of Acknowledgment for Audible Warnings | |
| U1794 | SCP (J1850) Lack of Acknowledgment for Mirrors | |
| U1797 | SCP (J1850) Lack of Acknowledgment for Door Locks | |
| U1798 | SCP (J1850) Lack of Acknowledgment for External Access (Doors) | |
| U1806 | SCP (J1850) Lack of Acknowledgment for Primary Id | |
| U1900 | CAN Communication Bus Fault | |
| U1950 | UPB Communication Bus Fault | |
| U2000 – U3000 (Manufacturer defined, common definition listed) | ||
| U2000 | Audio Rear Control Unit is Not Responding | |
| U2001 | Audio Tape Deck Unit is Not Responding | |
| U2002 | Audio Bezel is Not Responding | |
| U2003 | The Audio Compact Disk / Disk Jockey Unit is Not Responding | |
| U2004 | Audio Steering Wheel Control Unit is Not Responding | |
| U2005 | The audio Rear Integrated Control Panel Unit is Not Responding | |
| U2006 | Audio Remote Climate Control Unit is Not Responding | |
| U2007 | The audio Navigation Unit is Not Responding | |
| U2008 | The audio Phone is Not Responding | |
| U2009 | The audio Front Control Module (ACM) is Not Responding | |
| U2010 | The module is Not Responding (Non-SCP) | |
| U2011 | Module Transmitted Invalid Data (Non-SCP) | |
| U2012 | Communication Bus Error (Non-SCP) | |
| U2013 | The compass Module is not Responding | |
| U2014 | The audio Subwoofer Unit is Not Responding | |
| U2015 | Signal Link Fault (Non-SCP) | |
| U2016 | Signal Link Short to Ground (Non-SCP) / From NGV Module | |
| U2017 | Driver Side Crash Sensor Communication Fault (Non-SCP) | |
| U2018 | Passenger Side Crash Sensor Communication Fault (Non-SCP) | |
| U2019 | Audio Voice Module Not Responding | |
| U2020 | Audio Center Amp is not responding | |
| U2021 | Invalid /fault data received (Non-SCP) | |
| U20BB | Communication Loss with TCM | |
| U2150 | SCP (J1850) Invalid Data from REM | |
| U2152 | SCP (J1850) Invalid Data from GEM | |
| U2160 | SCP (J1850) Invalid Data from IC | |
| U2195 | SCP (J1850) Invalid Data from SCLM | |
| U2500 | (CAN) Lack of Acknowledgement From Engine Management | |
| U2510 | Received Data Does Not Match (Ford) | |
| U3000 – U4000 (Control module/ Power distribution) | ||
| U3000 | Control Module | |
| U3001 | Control Module Improper Shutdown | |
| U3002 | Vehicle Identification Number | |
| U3003 | Battery Voltage | |
| U3004 | Accessory Power Relay | |
| U3005 | Retained Accessory Power | |
| U3006 | Control Module Input Power “A” | |
| U3007 | Control Module Input Power “B” | |
| U3008 | Control Module Ground “A” | |
| U3009 | Control Module Ground “B” | |
| U300A | Ignition Switch | |
| U300B | Ignition Input Accessory/On/Start | |
| U300C | Ignition Input Off/On/Start | |
| U300D | Ignition Input On/Start | |
| U300E | Ignition Input On | |
| U300F | Ignition Input Accessory | |
| U3010 | Ignition Input Start | |
| U3011 | Ignition Input Off | |
| U3012 | ISO/SAE Reserved | |
| U3100 | ISO/SAE Reserved | |
| U3F00 | ISO/SAE Reserved | |
Once the OBD-II scanner has provided any of the above U Error codes, input the 5 keywords into Google search to see corresponding fixes.
Also, you can check your car manufacturer’s website for solutions since some of the codes are manufacturer specific.
We’ll do well to discuss fixing some of these U Error Codes on our Error code pages, check it out.
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