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 |
|---|---|---|---|
| B124649 | The power supply of sensor 2 of the rear electric booster heater has a malfunction. There is an internal electrical fault. | 1 | Body |
| B124664 | The power supply of sensor 2 of the rear electric booster heater has a malfunction. There is an implausible signal. | 1 | Body |
| B1247 | Rear left turn signal | 18 | Body |
| B1248 | Rear right turn signal | 16 | Body |
| B1249 | Start button illumination | 18 | Body |
| B124911 | PARKTRONIC sensor 2 has a malfunction. There is a short circuit to ground. | 1 | Body |
| B124997 | PARKTRONIC sensor 2 has a malfunction. The system function is restricted. | 1 | Body |
| B124E11 | PARKTRONIC sensor 3 has a malfunction. There is a short circuit to ground. | 1 | Body |
| B124E97 | PARKTRONIC sensor 3 has a malfunction. The system function is restricted. | 1 | Body |
| B1250 | Left front side parking assist sensor failure | 18 | Body |
| B1251 | Right front side parking assist sensor failure | 21 | Body |
| B1252 | USB Port | 19 | Body |
| B1253 | Airbag scrap command send | 17 | Body |
| B125311 | PARKTRONIC sensor 4 has a malfunction. There is a short circuit to ground. | 1 | Body |
| B125397 | PARKTRONIC sensor 4 has a malfunction. The system function is restricted. | 1 | Body |
| B1254 | Driver Pretensioner Circuit Short to Ground | 15 | Body |
| B1255 | Combination Switch Control Unit lost communication with MICU | 20 | Body |
| B1256 | Inner Right Rear (IRR) (Only On Dual Wheel) Tire Pressure Sensor And Transmitter Assembly | 15 | Body |
| B1257 | Driver seatbelt pretensioner open circuit or resistance high | 16 | Body |
| B1258 | Passenger seatbelt pretensioner short to ground | 13 | Body |
| B125811 | PARKTRONIC sensor 5 has a malfunction. There is a short circuit to ground. | 1 | Body |
| B125897 | PARKTRONIC sensor 5 has a malfunction. The system function is restricted. | 1 | Body |
| B1259 | Antenna ground circuit malfunction | 12 | Body |
| B125D11 | PARKTRONIC sensor 6 has a malfunction. There is a short circuit to ground. | 1 | Body |
| B125D97 | PARKTRONIC sensor 6 has a malfunction. The system function is restricted. | 1 | Body |
| B1260 | Confirmation button on the lower right button of the centralized control steering wheel is faulty | 17 | Body |
| B1261 | ESCAPE button fault | 16 | Body |
| B126181 | invalid serial data received - Driver’s seat sensor | 3 | Body |
| B1262 | Driver Side Airbag Short to Ground | 14 | Body |
| B126231 | Das KompassModul im Innenspiegel hat Funktionsstörung. Es liegt ein interner Komponentenfehler vor. | 1 | Body |
| B1263 | MODE button fault | 15 | Body |
| B126322 | Der KompassModul im Innenspiegel hat Funktionsstörung. Es liegt ein interner Komponentenfehler vor. (Wert zu groß) | 1 | Body |
| B1264 | Confirmation button fault of the lower left knob of the centralized control steering wheel | 14 | Body |
| B1265 | Driver's side airbag resistance is high | 13 | Body |
| B1266 | Speed setting increase button fault | 14 | Body |
| B1267 | Speed setting reduction button fault | 14 | Body |
| B1268 | Cruise control/speed limiter standby button fault | 14 | Body |
| B1269 | Convertible/Folding Top Fully Up Position Switch | 13 | Body |
| B1270 | High Mounted Stop Lamp | 13 | Body |
| B1271 | Speed limiter activation button fault | 15 | Body |
| B1272 | Cruise control activation button fault | 15 | Body |
| B1273 | Restore memory speed button fault | 14 | Body |
| B1274 | Speed limiter/cruise control switch failure | 14 | Body |
| B1275 | The cruise control/speed limiter limit status in the Built-in System Interface (BSI) and the engine ECU are inconsistent | 16 | Body |
| B1276 | Self-cruise control function speed setting +/- button failure | 16 | Body |
| B127655 | The service memory in the maintenance program is full. - not configured | 2 | Body |
| B1277 | Fuel filler cap sensor failure | 15 | Body |
| B127700 | No description available | 2 | Body |
| B127755 | The maintenance program variant is unknown. - not configured | 2 | Body |
| B1278 | Fuel gauge failure | 16 | Body |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.