paulasky28

Mercedes A Klasse Hybrid Engine Misfires

My 2021 Mercedes A Klasse hybrid engine runs rough, and the check engine light is on. It feels like it's misfiring, especially when accelerating. The error code shows combustion misfires. Could it be a faulty injection valve?

A 2021 Mercedes A Klasse hybrid engine is experiencing rough running and misfiring, with the check engine light on and an error code indicating combustion misfires. The issue is suspected to be a faulty injection valve. A similar case was resolved by replacing the fuel injectors, which improved engine performance and fuel economy. The problem was confirmed to be a defective injector, and replacing it resolved the issue.

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4 comment(s)

I had a similar issue with my A Klasse. Engine misfiring, rough idle, and reduced throttle response point to a fuel injector problem. Have you noticed any change in fuel consumption?

Thanks, yes, fuel economy seems worse. Did you replace the fuel injectors?

Yes, replacing the fuel injectors fixed it. Given the error code and symptoms, I'd suggest getting the injectors checked and maybe replaced at a service center.

Thanks I took it to a mechanic and they said it was a defective injector. I had it replaced for 515€ and it runs perfectly. Appreciate the help!

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MERCEDES

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AKLASSE