Mercedes-Benz fault codes: probable meanings
Codes specific to Mercedes-Benz (often P1xxx, B1xxx, C1xxx, U1xxx). The manufacturer does not publish these meanings: they come from an open database and remain probable. The same code can have another meaning depending on the model or the year.
Codes: 32, from smallest to largest.
| Code | Probable meaning |
|---|---|
| P1105 | Atmospheric Pressure Sensor In Control Module |
| P1220 | Fuel Quantity Actuator Y231 |
| P1221 | CAN Communication ETC Or ETS Interrupted |
| P1222 | IFI Accelerator Pedal Position Sensor R252 |
| P1223 | Fuel Rack Position Sensor Y2311 |
| P1335 | CKP Sensor IFI |
| P1350 | Injection Sensor Solenoid |
| P1351 | Injection Sensor Circuit |
| P1352 | Needle Lift Sensor |
| P1401 | EGR Lifting Sender B283 |
| P1404 | EGR Control |
| P1465 | EPW Power |
| P1470 | Pressure Control Flap Vacuum Transducer Y312 |
| P1475 | Resonance Intake Line Switchover Valve Y227 |
| P1476 | Resonance Intake Manifold Switchover Valve Y226 |
| P1480 | Preglow Control |
| P1481 | Glow Plug Failure |
| P1482 | Preglow Control Module N142 |
| P1520 | Cruise Control Switch S40 |
| P1610 | Voltage Supply Missing Or Relay Module K40 |
| P1611 | IFI Control Module N37 |
| P1612 | IFI Control Module N37 Voltage Circuit 15 |
| P1613 | IFI Control Module N37 |
| P1614 | IFI Control Module N37 Voltage Or Fuel Metering Actuator Y231K1 Or Fuel Rack Position Sensor Y2311 |
| P1615 | IFI Control Module N37 Supply Voltage |
| P1617 | Control Module Fault Or Control Module Not Coded |
| P1622 | Electrohydraulic Shut-Off Actuator Y11 |
| P1625 | Check Engine MIL |
| P1630 | Drive Authorization Signal |
| P1705 | Starter Lock-Out Backup Lamp Switch S161 |
| P1780 | Modulation Pressure Switchover Valve ATCC Y34 Or Upshift Delay Switchover Valve ATCC Y35 |
| P1781 | Upshift Delay Switchover Valve ATCC Y35 |
To understand a code on your car (probable causes, what to check first), the DiagAuto AI app explains it using AI. Discover the app
Official meanings: OBDex (public domain, CC0). Manufacturer codes: dtc-database (MIT license), probable meanings not verified by the manufacturers. The same meaning can vary depending on the model: always have a diagnosis confirmed by a professional.