Mercedes Benz A-Class Fault Codes
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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Mercedes Benz A-Class Recall Notices
Common 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.
4/10
P0128
Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)
Learn More Fixes P1831
Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground
Learn More
8/10
P0106
Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
Learn More Fixes
- 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.
Rivals in the class include the BMW 1 Series, Audi A3 Sportback, and Ford Focus, among many others.
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.
