Mercedes-Benz Truck Mercedes Engine Fault Codes List PDF : Fault Codes List PDF (2024)

FAQs

How do you clear a Mercedes fault code? ›

Find the reset button on the left side of your instrument cluster. Press the reset button and hold it until your display shows “To reset: Press reset button for 3 seconds.” Push the reset button again and hold it in until the display shows the system has been reset.

In most Mercedes vehicles, there is a port under the steering wheel where you can connect an OBD Code-Reader or Scanner tool, at which point the OBD Code-Reader reads out a particular code. This code tells you what the specific problem is with your car.

MR fault codes in Mercedes-Benz vehicles detect if there are malfunctions with the engine – speed is too high, charge pressure deviation is too large, charge pressure for braking operation is not reached or the oil pressure is too low.

A fault code, or Diagnostic Trouble Code (DTC) are system code errors that tell your Mercedes what is malfunctioning. In newer Mercedes models, the fault code will trigger a dash light or error message, alerting you to get your Mercedes inspected and diagnosed.

The only way to clear a PDTC is to fix the underlying problem with the vehicle that originally caused the PDTC and its corresponding DTC to set, and then allow the vehicle sufficient drive time to re-run the monitor that identified the problem in the first place.

You first want to press and hold the odometer reset button and the trip button at the same time. While holding those down, turn the ignition on and release the odometer reset and trip buttons. After taking these steps, the diagnostic codes should appear in your odometer display.

What are ECM Codes? ECM codes, or Diagnostic Trouble Codes (DTCs), are alphanumeric codes generated by the ECM to indicate specific issues within the vehicle's engine or related systems.

This Mercedes-Benz radio code will typically be a five-digit sequence of numbers. It can be found in your owner's manual or by contacting an authorized Mercedes-Benz dealership with your VIN and proof of vehicle ownership.

If your engine misfire is the result of the spark plugs, your diagnosis will typically turn up codes P0300-P0312.

How to delete fault code in Mercedes? ›

Disconnecting the negative battery cable for 30-60 seconds should clear the check engine codes and reset the diagnostic system. If you set the negative battery cable to the side, make sure the cable does not touch the battery or any metal parts of the vehicle to avoid grounding the circuit.

What is a DTC Code? A DTC, short for Diagnostic Trouble Code, is a code used to diagnose malfunctions in a vehicle or heavy equipment.

GS fault codes in Mercedes-Benz vehicles detect if there are any malfunctions related to the gear shift. Usually, such issues are related to the power or voltage supply for the joystick, sensor malfunctions, clutch displacement, or cable switch.

Plug an OBD-II scanner into your vehicle's OBD port and reset it to clear the check engine light. Disconnecting and reconnecting your battery will restart your vehicle's computer and clear the light. Drive an older vehicle around for a few days after repairs. The light will go off on its own once the computer resets.

A simple socket set will likely be all you need to loosen the nut on the battery terminal cable and wiggle off the cable. Disconnecting the negative battery cable for 30-60 seconds should clear the check engine codes and reset the diagnostic system.