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alexanderlange5

XC90 Diesel Fuel Pump Connection Issue

My 2021 Volvo XC90 diesel with 175,020 kilometers sometimes won't start, stalls at idle, and the check engine light is on. It runs rough and fuel consumption is up. Diagnostic tool shows a fuel pressure error. Fuses and relays are fine. I suspect a defective cable or plug connection. Similar experiences?

Summary of the thread

A 2021 Volvo XC90 diesel with 175,020 kilometers is experiencing starting issues, stalling at idle, rough running, increased fuel consumption, and a check engine light, with a diagnostic tool indicating a fuel pressure error. The problem is suspected to be a defective cable or plug connection related to the fuel pump. A similar case revealed that the issue was due to a faulty fuel pump connection, and a thorough inspection of the fuel pump wiring and connectors is recommended. A professional diagnosis at a workshop is advised to confirm and resolve the issue.

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4 comment(s)

charlesphoenix7

I have a XC90, and your situation sounds painfully familiar. I experienced comparable symptoms some time ago. Does the car struggle to accelerate, particularly when the fuel tank is less than half full?

alexanderlange5 (community.author)

Yes, I've noticed hesitation during acceleration, more so when the fuel level is lower. Can you elaborate on your experience?

charlesphoenix7

The symptoms match precisely. In my case, the issue stemmed from a faulty fuel pump connection. I recommend a thorough inspection of the fuel pump wiring and connectors. Ultimately, I would suggest a visit to a reputable workshop for a professional diagnosis. That's the only way to be certain.

alexanderlange5 (community.author)

Thanks for confirming my suspicions. A workshop visit was inevitable. For those with similar issues, it was indeed the fuel pump connection. Total repair cost, including diagnosis and connector replacement, was 95€.

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VOLVO

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XC90