The reference covers 118 codes from the factory tables of Mercedes-Benz — the full list by system is below, stop-now codes first.
A code has two halves. SPN is what is actually at fault — the sensor, component, or parameter. FMI is what is wrong with it — value out of range, open circuit, short circuit, invalid data. So “SPN 100” alone is not a diagnosis yet, but “100/1” already tells you oil pressure has dropped below normal.
That is almost always how it goes: one fault drags five or six codes behind it. An empty AdBlue tank first throws a level error, then interrupted dosing, then a NOx excess and a torque derate. Fix the root cause and the rest clear on their own. Paste the whole list — we will show which code is the root cause.
| 0000 | Atego MTCO: The positioning of the tachograph charts is disturbed. Atego ZHE: Control unit fault Actros ZHE: The control unit is faulty. |
| 1015 | Atego AGS: A checksum error occurred while reading the EEPROM. Atego MR: The oil temperature sensor has exceeded the measuring range (short circuit to positive, open circuit). Atego NR: Incorrect checksum of the pressure sensor calibration data. Atego PSM: Checksum error in the control unit software |
| 2742 | The retarder oil temperature sensor has an open circuit or a short circuit to ground. |
| 4644 | Atego FR: The accelerator pedal sensor is stiff Axor EHZ: The steered wheel angle sensor 'Rear tag axle 1' has a winding short circuit |
| 7405 | Proportional valve 5 has a short circuit to positive. |
| 10820 | Internal error in the control unit. |
| 13523 | Unknown fault code. Unknown fault type: 0 |
| 16820 | SCR compressed air pressure too high. |
| 540003 | CAN message 'Vehicle speed' incorrect or unavailable. |
| 110B02 | Parking brake status implausible |
| 30F0EC | EDW: Component 'B43 (interior protection sensor)' has a functional fault. MSF: Component 'S22 (vehicle level control system control panel)' has an electrical fault. |
| 66F0E7 | Component 'A67 y1 (AdBlue® pressure reducing valve)' is sticking. |
| A40408 | Component Y636 (charge air pressure control actuator) reports a fault. |
| BE0000 | Engine crankshaft speed too high. |
| MR 1415 | Combination sensor 'boost pressure and charge air temperature': pressure sensor exceeded the measuring range (short circuit to positive, open circuit). |
Know the code number? Type it into the search — or paste the whole list from the scanner and we will show which fault is the real one.