You can find common Mercedes Benz M-Class fault codes on this page that when clicked take you to a detailed description.
You can also type in the fault code you are getting below to find a more detailed description.
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Mercedes Benz M-Class Recalls
When a car manufacturer detects a problem with a model they put out a recall notice and more often than not offer to fix the problem free of charge.
You can check to see if your Mercedes Benz M-Class has any recall notices on our sister site AutoRecalls.co, sorted by model year.View Mercedes Benz M-Class Recalls »
Common M-Class Fault Codes
These are the most common M-Class fault codes that people are searching for.
Intake Manifold Runner Control Stuck Closed Bank 1Learn More
Diesel Particulate Filter Restriction - Soot AccumulationLearn More
Secondary Air Injection System MalfunctionLearn More
Incorrect Gear RatioLearn More
Hydraulic Base Brake FailureLearn More
ABS Acceleration Switch Circuit FailureLearn More
ABS Outlet Valve Coil RF Circuit FailureLearn More
ABS Hydraulic Valve Circuit FailureLearn More
PRNDL Switch Circuit FailureLearn More
Lost Communication With Anti-Lock Brake System (ABS) Control ModuleLearn More
Lost Communication with TCMLearn More
Contr. Module LockedLearn More
Intake Manifold Runner Control (Stuck Closed)Learn More
Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To GroundLearn More
Calibration Resistor Out Of RangeLearn More
4X4 Initialization FailureLearn More
PSP Switch Out of Self Test RangeLearn More
Transmission Transfer Case Contact Plate 'D' Circuit FailureLearn More
Transmission Transfer Case Shift Motor Short Circuit To BatteryLearn More
Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit FailureLearn More
Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit FailureLearn More
DPFE Sensor Upstream Hose Off Or PluggedLearn More
EGR Flow Out Of Self Test RangeLearn More
Dual Alternator Upper FaultLearn More
Pump Speed Signal FaultLearn More
Inductive Signature Chip Communication ErrorLearn More
DPFE Circuit Low InputLearn More
Fuel Tank Pressure Relief Valve MalfunctionLearn More
GLOW PLUG FAILURELearn More
Traction Control Output Circuit MalfunctionLearn More
Ignition Coil C Primary Circuit MalfunctionLearn More
- Manufacturer: Mercedes Benz
About the M-Class
The M-Class first made its debut back in 1997 under the German manufacturer. The model then saw three generations until its renaming. The nameplate was retired during the third generation to the GLE to align it with the SUV range.
Including the new version, there have been a total of four generations, with the latest GLE being released in 2019.
Despite original plans for the M-Class to replace the G-Class, Mercedes changed this because of consistent demand for both models. Competition from outside of manufacturers comes from Audi Q7, BMW X5, and Volvo XC90.
There are a number of fault codes that have been known to affect a number of Mercedes SUVs, most likely owing to shared mechanical systems and components. The most common of these is P2006, which is logged when the intake manifold runner is stuck closed.
Finding the cause of this issue is known to be fairly problematic but owners have reported that checking the runner actuator is one of the best first steps.
The SUV is also known to suffer from P0128. This code is logged when the engine coolant temperature is not reaching the desired temperature.
This is usually caused by a faulty thermostat. Another common cause is incorrect coolant fluid levels. Thankfully, both of these are relatively easy fixes.
Fault code P0455 is another fairly common problem for these models.
This is logged when a leak in the EVAP system is detected. One of the most common causes is a loose gas cap, but there can also be actual leaks in the EVAP hoses or components.