RC Hybrid Engine Stalling

I'm having a real headache with my 2018 Lexus RC hybrid. Lately, the check engine light keeps popping up, and the engine stalls when I'm idling. It also feels like it's lost some power. I'm no mechanic, but could this be connected to bad fuel?

4 comment(s)

Sounds familiar! I had similar issues with my RC. Check your fuel volume regulator. When mine went bad, it caused engine misfires and rough idling. What is the car mileage?

Thanks for the quick response! The car has about 172952 km on it. How did you figure out it was the fuel volume regulator? Was it difficult to replace?

With that many km, it is a likely suspect in my experience. I diagnosed it using an OBD reader and a bit of research online. If you aren't too familiar, I’d suggest getting it checked by a professional. It could also be the high pressure pump, but either way I would just get it looked at.

You were spot on! Took it to the shop, and they confirmed it was a defective fuel volume regulator likely caused by the high pressure pump. Repair cost me about 1510€ which is unfortunate, but at least it's fixed now. Thanks for pointing me in the right direction!

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