LC rough idle and stalling

I'm having trouble with my 2020 Lexus LC hybrid (190,000 km). It's struggling to start, sometimes stalls when idling, and the check engine light is on. The engine runs rougher, and fuel consumption seems higher. The error memory has stored codes. Could a defective fuel pump cause these issues? Or is it the fuel injector?

4 comment(s)

I also drive an LC and had comparable issues recently. Did you check the cable or plug connection of the fuel pump? This may be the cause.

Thanks! I didn't check those specifically. Where are those connections located? Is it difficult to inspect them?

The connector is on the fuel pump assembly, under the rear seat. The check requires specific tools, so you should visit a workshop. This should not be DIY.

Thanks for the info. I took it to a local mechanic, and you were right. It was a loose connector on the fuel pump. They cleaned and secured it, cleared the code, and everything seems to be running smoothly again. The repair cost was only 95€! Thanks for pointing me in the right direction.

Join the discussion now: