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 |
|---|---|---|---|
| U1C0AF1 | Low Confidence - BMS | 1 | Network |
| U1C0BF1 | HV-Battery - HV battery request not possible because of other system fault | 1 | Network |
| U1C0CF0 | Low Confidence - BMS | 1 | Network |
| U1C0CF1 | Low Confidence - BMS | 1 | Network |
| U1C0DF0 | Low Confidence - BMS | 1 | Network |
| U1C0DF1 | Low Confidence - BMS | 1 | Network |
| U1C10F1 | HV-Battery - HV battery temperature fault | 1 | Network |
| U1C11F0 | Low Confidence - BMS - HV battery cell over voltage condition detected | 1 | Network |
| U1C11F1 | HV-Battery - HV battery cell over voltage condition detected | 1 | Network |
| U1C12F0 | Low Confidence - BMS - HV battery cell under voltage condition detected | 1 | Network |
| U1C12F1 | HV-Battery - HV battery cell under voltage condition detected | 1 | Network |
| U1C13F1 | HV-Battery - HV battery over temperature condition detected | 1 | Network |
| U1C23F0 | Low Confidence - BMS - HV battery isolation breakdown detected | 1 | Network |
| U1C23F1 | HV-Battery - HV battery isolation breakdown detected | 1 | Network |
| U1C24F0 | HV-Battery - HVIL fault detected | 1 | Network |
| U1C24F1 | HV-Battery - HVIL fault detected | 1 | Network |
| U1C25F0 | Low Confidence - BMS - Positive contactor fault detected | 1 | Network |
| U1C25F1 | HV-Battery - Positive contactor fault detected | 1 | Network |
| U1C26F0 | Low Confidence - BMS - Negative contactor fault detected | 1 | Network |
| U1C26F1 | HV-Battery - Negative contactor fault detected | 1 | Network |
| U1C27F0 | Low Confidence - BMS - Over voltage condition detected external to HV battery | 1 | Network |
| U1C27F1 | HV-Battery - Over voltage condition detected external to HV battery | 1 | Network |
| U1C28F0 | Low Confidence - BMS | 1 | Network |
| U1C28F1 | Low Confidence - BMS | 1 | Network |
| U1C29F1 | HV-Battery - HV battery internal fluid condition detected | 1 | Network |
| U1C2FF1 | HV-Battery - HV battery ECU error detected | 1 | Network |
| U1C30F0 | Low Confidence - BMS | 1 | Network |
| U1C30F1 | Low Confidence - BMS | 1 | Network |
| U1C31F0 | Low Confidence - BMS - HV battery thermal condition detected | 1 | Network |
| U1C31F1 | HV-Battery - HV battery thermal condition detected | 1 | Network |
| U1C32F1 | HV-Battery - HV battery internal communication error | 1 | Network |
| U1C33F0 | Low Confidence - BMS - HV battery internal communication error | 1 | Network |
| U1C33F1 | HV-Battery - HV battery internal communication error | 1 | Network |
| U1C34F0 | Low Confidence - BMS | 1 | Network |
| U1C34F1 | Low Confidence - BMS | 1 | Network |
| U1C35F0 | Low Confidence - BMS | 1 | Network |
| U1C35F1 | Low Confidence - BMS | 1 | Network |
| U1C36F1 | HV-Battery - HV battery current sensor problem detected | 1 | Network |
| U1C3BF1 | HV-Battery - HV battery voltage sensing error detected | 1 | Network |
| U1C3CF0 | Low Confidence - BMS | 1 | Network |
| U1C3CF1 | Low Confidence - BMS | 1 | Network |
| U1C3DF0 | Low Confidence - BMS - HV battery 12V power supply problem detected | 1 | Network |
| U1C3DF1 | HV-Battery - HV battery 12V power supply problem detected | 1 | Network |
| U1C3EF1 | HV-Battery - Contactor power supply problem | 1 | Network |
| U1C3FF1 | HV-Battery - Precharge failure | 1 | Network |
| U1C48F0 | Low Confidence - BMS | 1 | Network |
| U1C48F1 | Low Confidence - BMS | 1 | Network |
| U1C49F0 | Low Confidence - BMS - HV battery detected unexpected HV bus behavior | 1 | Network |
| U1C49F1 | HV-Battery - HV battery detected unexpected HV bus behavior | 1 | Network |
| U1C50F1 | HV-Battery - Disconnect in HV system detected | 1 | Network |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.