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Lexus NX Engine Stalling Reduced Power

I'm having some trouble with my 2023 Lexus NX gasoline. It's got about 67k kilometers on it. Recently, the check engine light came on, and the engine stalls at idle sometimes. I've also noticed reduced engine power. I'm thinking it might be a fuel issue, maybe the fuel volume regulator? Has anyone else experienced this?

A 2023 Lexus NX owner experienced engine stalling, reduced power, and a check engine light, suspecting a fuel issue, possibly the fuel volume regulator. Another individual with similar symptoms suggested the high pressure pump as a potential cause. After consulting a mechanic, it was confirmed that the high pressure pump was indeed the issue, and replacing it resolved the problem.

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4 comment(s)

Sounds familiar! I had similar symptoms with my NX. Check engine light, rough idling, and definitely felt a power loss. Could be the high pressure pump. Is it struggling on acceleration too?

Yeah, the acceleration isn't as smooth as it used to be. It's a bit jerky. You mentioned the high pressure pump – was that the culprit for you? And how did you figure it out?

Yep, high pressure pump was the problem. The dealer diagnosed it. Apparently, a defective fuel volume regulator can trigger all those symptoms. Bit of a pain, cost me around 1510€ to get it sorted. I'd take it to a workshop to be sure.

Thanks for the info! I took it to my local mechanic, and you were spot on – it was the high pressure pump. They replaced it, and everything's running smoothly now. Really appreciate the help!

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LEXUS

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