You can find common Mercedes Benz A-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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Search Mercedes Benz A-Class Codes
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Mercedes Benz A-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 A-Class has any recall notices on our sister site AutoRecalls.co, sorted by model year.View Mercedes Benz A-Class Recalls »
Common A-Class Fault Codes
These are the most common A-Class fault codes that people are searching for.
Injector Circuit Malfunction - Cylinder 1Learn More
Serial Communication Link MalfunctionLearn More
Thermostat Heater Control Circuit HighLearn More
Contr. Module LockedLearn More
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
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 A-Class
The A-Class first entered the market as a subcompact in 1997. It later pivoted into the subcompact executive class in 2013. This huge change in terms of styling was done to allow the model to compete with the emerging popularity of the subcompact executive class.
There have been four generations of the A-Class to hit the markets, with the latest making its debut in 2018. Although, it is hard to consider the first and second generations as the same model as today’s offering.
The most common problem owner’s have reported is fault code P0201, which represents a malfunction with the fuel injector for the first cylinder. This has caused owner’s a host of driveability issues, including misfires.
Of course, one of the most likely causes is a faulty fuel injector for the first cylinder. However, it is typically logged with the same code for the other cylinders. This can indicate the problem is somewhere upstream in the fuel system, which can mean there are faulty components responsible for supplying and pressurizing the fuel.
Another fairly common issue is P0335, which indicates that there is a problem with the crankshaft position sensor. Owners have reported that a faulty crankshaft position sensor is one of the most likely causes, but faults in the sensor’s circuit can also be the culprit.
The A-Class is also somewhat known to suffer from P0068, which represents an issue with the signal from the mass airflow (MAF) sensor, manifold absolute pressure (MAP) sensor, and throttle position sensor.
Owners have reported that faulty sensors are one of the most common causes for this issue, which can be a simple fix.