Mercedes-Benz fault codes
20,291 codes · 1,724 vehicle records · 258 ECU records · 56,350 live-data parameters
Search only Mercedes-Benz codes
Codes 20,291
| Code | Description | Brands | System |
|---|---|---|---|
| U3017E1 | Control Module Timer/Clock Performance | 1 | Network |
| U3017E5 | The real-time internal control unit clock has a malfunction. Peripheral clock. Per PLL loss of lock | 1 | Network |
| U3017FA | The real-time internal control unit clock has a malfunction. | 1 | Network |
| U3017FB | The real-time internal control unit clock has a malfunction. | 1 | Network |
| U3017FF | Aurix (Master Controller) recovery timer fault | 1 | Network |
| U301D | Control Module Wake-up Circuit A Performance | 4 | Network |
| U302083 | The security module of the control unit has detected a communication error - Value of Signal Protection Calculation Incorrect | 1 | Network |
| U303657 | Communication Authentication Signal Performance - Incompatible Software Component | 1 | Network |
| U303681 | Communication Authentication Signal Performance - Invalid tick count received | 1 | Network |
| U3242 | No description available | 3 | Network |
| U3501 | Control Module Input Power A Circuit Low | 12 | Network |
| U3505 | Control Module Input Power B Circuit Low | 12 | Network |
| U3510 | Control Module Missing Calibration | 5 | Network |
| U3511 | High voltage system interlock circuit 'B' | 5 | Network |
| U351100 | Interlock circuit B of the high-voltage on-board electrical system has an electrical fault. | 1 | Network |
| U351101 | High Voltage Interlock Hvac open circuit | 1 | Network |
| U351111 | High Voltage Interlock Hvac short to ground | 1 | Network |
| U351112 | High Voltage Interlock Hvac Short to battery | 1 | Network |
| U351113 | High Voltage Interlock Hvac open circuit | 1 | Network |
| U3511FA | Interlock circuit B of the high-voltage on-board electrical system has an electrical fault. HVIL EATS Rear. | 1 | Network |
| U3512 | High voltage system interlock circuit 'B' performance | 5 | Network |
| U3513 | High voltage system interlock circuit 'B' low | 5 | Network |
| U3514 | High voltage system interlock circuit 'B' high | 5 | Network |
| U3515 | High voltage system interlock circuit 'C' | 4 | Network |
| U351500 | Interlock circuit C of the high-voltage on-board electrical system has an open circuit. | 1 | Network |
| U351511 | Interlock circuit C of the high-voltage on-board electrical system has an open circuit. There is a short circuit to ground | 1 | Network |
| U351512 | Interlock circuit C of the high-voltage on-board electrical system has an open circuit. There is a short circuit to positive. | 1 | Network |
| U351513 | Interlock circuit C of the high-voltage on-board electrical system has an open circuit. There is an open circuit. | 1 | Network |
| U3515FA | Interlock circuit C of the high-voltage on-board electrical system has an open circuit. HVIL Service Disconnect | 1 | Network |
| U3516 | High voltage system interlock circuit 'C' performance | 4 | Network |
| U3517 | High voltage system interlock circuit 'C' low | 4 | Network |
| U351911 | Interlock circuit D of the high-voltage on-board electrical system has an electrical fault. There is a short circuit to ground. | 1 | Network |
| U351912 | Interlock circuit D of the high-voltage on-board electrical system has an electrical fault. There is a short circuit to positive. | 1 | Network |
| U351913 | Interlock circuit D of the high-voltage on-board electrical system has an electrical fault. There is an open circuit. | 1 | Network |
| U3519FA | Interlock circuit D of the high-voltage on-board electrical system has an electrical fault. HVIL EATS Front. | 1 | Network |
| U357700 | Sensor module C of the hybrid/high-voltage battery module has a malfunction. | 1 | Network |
| U35774B | Sensor module C of the hybrid/high-voltage battery module has a malfunction. Over Temperature. | 1 | Network |
| U358B01 | Internal temperature sensor 3 of the control unit has an electrical fault. There is a general electrical fault. | 1 | Network |
| U358B16 | Control Module Internal Temperature Sensor 'C' Circuit - The limit value for electrical voltage has not been attained. | 1 | Network |
| U358B17 | Control Module Internal Temperature Sensor 'C' Circuit - The limit value for electrical voltage has been exceeded. | 1 | Network |
| U358BFA | Control Module Internal Temperature Sensor C Circuit - There is a positive offset, Negative contactor. | 1 | Network |
| U358BFB | Control Module Internal Temperature Sensor C Circuit - There is a negative offset, Negative contactor. | 1 | Network |
| U358F16 | No description available | 1 | Network |
| U358F17 | No description available | 1 | Network |
| U359116 | No description available | 1 | Network |
| U359117 | No description available | 1 | Network |
| U35D817 | Internal temperature sensor 4 of the control unit has an electrical fault. The limit value for electrical voltage has been exceeded. | 1 | Network |
| U35D8FA | Control Module Internal Temperature Sensor 'D' Circuit - There is a positive offset, Positive contactor. | 1 | Network |
| U35D8FB | Control Module Internal Temperature Sensor 'D' Circuit - There is a negative offset, Positive contactor. | 1 | Network |
| U365A81 | Vehicle Communication Bus 'L' - Invalid error for AC Temp related messages | 1 | Network |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.