karenmond5

Mercedes GLE Hybrid Engine Trouble Resolved

My 2020 Mercedes GLE hybrid is giving me fits. The check engine light is on, and it's running rough, stalling at idle, and jerking like crazy when I accelerate. Could a defective fuel pressure sensor cause these issues? I am also concerned about fuel economy and proper fuel delivery to the fuel injectors. I've heard that a faulty sensor can mess with the fuel pump. Any ideas?

4 comment(s)

A defective fuel pressure sensor can indeed cause such symptoms. I encountered a similar problem with my Audi some time ago. Have you checked the cable and plug connection to the sensor? A loose or corroded connection is a frequent cause.

Thanks for the quick reply! Where exactly is that sensor located, and how would I go about checking the cable and plug? Is it something I can reasonably do myself, or am I better off taking it to a professional?

The fuel pressure sensor is typically located on the fuel rail. Inspect the cable for any visible damage and ensure the plug is securely connected. While a visual inspection is straightforward, diagnosis may require specialized tools. Given the symptoms, I suggest consulting a workshop to properly diagnose the issue.

Thank you for your help and advice! It turned out to be a defective cable to the fuel pressure sensor, just as you suspected. The workshop replaced the cable, and the problem is now resolved. The total repair cost was 95€.

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