Mercedes-Benz fault codes
20,291 codes · 1,724 vehicle records · 258 ECU records · 56,350 live-data parameters
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Codes 20,291
| Code | Description | Brands | System |
|---|---|---|---|
| B122349 | Temperature sensor 3 of the refrigerant compressor has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122364 | Temperature sensor 3 of the refrigerant compressor has a malfunction. There is an implausible signal. | 1 | Body |
| B1224 | External left rear parking assist sensor failure | 20 | Body |
| B122449 | Temperature sensor 4 of the refrigerant compressor has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122464 | Temperature sensor 4 of the refrigerant compressor has a malfunction. There is an implausible signal. | 1 | Body |
| B1225 | Internal right front parking assist sensor failure | 21 | Body |
| B122549 | Temperature sensor 5 of the refrigerant compressor has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122564 | Temperature sensor 5 of the refrigerant compressor has a malfunction. There is an implausible signal. | 1 | Body |
| B1226 | External right front parking assist sensor failure | 20 | Body |
| B122649 | The current sensor of phase 1 of the refrigerant compressor has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122664 | The current sensor of phase 1 of the refrigerant compressor has a malfunction. There is an implausible signal. | 1 | Body |
| B1227 | Passenger Restraints Pressure Sensor | 17 | Body |
| B122749 | The current sensor of phase 2 of the refrigerant compressor has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122764 | The current sensor of phase 2 of the refrigerant compressor has a malfunction. There is an implausible signal. | 1 | Body |
| B1228 | Driver Seatbelt Lap Pretensioner Deployment Control | 15 | Body |
| B122849 | The current sensor of phase 3 of the refrigerant compressor has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122864 | The current sensor of phase 3 of the refrigerant compressor has a malfunction. There is an implausible signal. | 1 | Body |
| B1229 | Left seat back temperature sensor | 15 | Body |
| B122949 | The power supply of sensor 1 of the refrigerant compressor has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122964 | The power supply of sensor 1 of the refrigerant compressor has a malfunction. There is an implausible signal. | 1 | Body |
| B122A49 | Current sensor 1 of the front electric booster heater has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122A64 | Current sensor 1 of the front electric booster heater has a malfunction. There is an implausible signal. | 1 | Body |
| B122B09 | No description available | 2 | Body |
| B122B11 | PARKTRONIC sensor 7 has a malfunction. There is a short circuit to ground. | 1 | Body |
| B122B12 | Park Sensor 7 short to battery | 2 | Body |
| B122B13 | Park Sensor 7 open circuit | 1 | Body |
| B122B14 | Park Sensor 7 short to ground | 2 | Body |
| B122B15 | PARKTRONIC sensor 7 has a malfunction - Circuit Short To Battery or Open | 2 | Body |
| B122B23 | No description available | 2 | Body |
| B122B24 | No description available | 2 | Body |
| B122B4A | Park Sensor 7 wrong type | 2 | Body |
| B122B95 | No description available | 2 | Body |
| B122B97 | PARKTRONIC sensor 7 has a malfunction. The system function is restricted. | 1 | Body |
| B122C49 | Current sensor 2 of the front electric booster heater has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122C64 | Current sensor 2 of the front electric booster heater has a malfunction. There is an implausible signal. | 1 | Body |
| B122D49 | Voltage sensor 1 of the front electric booster heater has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122D64 | Voltage sensor 1 of the front electric booster heater has a malfunction. There is an implausible signal. | 1 | Body |
| B122E49 | Voltage sensor 2 of the front electric booster heater has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122E64 | Voltage sensor 2 of the front electric booster heater has a malfunction. There is an implausible signal. | 1 | Body |
| B122F49 | Temperature sensor 1 of the front electric booster heater has a malfunction. There is an internal electrical fault. | 1 | Body |
| B122F64 | Temperature sensor 1 of the front electric booster heater has a malfunction. There is an implausible signal. | 1 | Body |
| B1230 | Left seat back | 22 | Body |
| B123011 | PARKTRONIC sensor 8 has a malfunction. There is a short circuit to ground. | 1 | Body |
| B123097 | PARKTRONIC sensor 8 has a malfunction. The system function is restricted. | 1 | Body |
| B1231 | NGGT-Alternator | 25 | Body |
| B123149 | Temperature sensor 2 of the front electric booster heater has a malfunction. There is an internal electrical fault. | 1 | Body |
| B123164 | Temperature sensor 2 of the front electric booster heater has a malfunction. There is an implausible signal. | 1 | Body |
| B1232 | Rear Side-Air Bag Circuit Low Resistance (Driver Side) | 22 | Body |
| B123249 | Temperature sensor 3 of the front electric booster heater has a malfunction. There is an internal electrical fault. | 1 | Body |
| B123264 | Temperature sensor 3 of the front electric booster heater has a malfunction. There is an implausible signal. | 1 | Body |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.