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sven_dunkel1

Lexus LS power loss and stalling

Experiencing power loss, rough running, and stalling with my 2015 Lexus LS gasoline engine. Check engine light is on and it has 104633 km. Could this be a mixture preparation error?

4 comment(s)

robinhofmann90

I had similar symptoms with my LS, check engine light and stalling. Was it worse when the engine was cold? Any codes when you scanned it? Could be a bad oxygen sensor, spark plugs, or even a catalytic converter. What air-fuel ratio are you seeing?

sven_dunkel1 (Author)

The stalling does seem worse when the engine is cold. I haven't checked the air-fuel ratio. What codes should I be looking for? Did you resolve the issue on your LS, and how?

robinhofmann90

Cold stalling points away from the O2 sensor. Check for codes related to fuel injectors or misfires; those were the ones I was getting. Turns out, one of my injectors was bad. If you're getting similar codes, take it to a trusted workshop for diagnosis and potential injector replacement. Best not to mess with the fuel system yourself if you're not experienced. I let the pros handle it.

sven_dunkel1 (Author)

I appreciate the insights. A workshop visit is necessary. I will ask them to investigate the injectors. Thanks for sharing your experience; it has been most helpful. They quoted me 515€ for the repair, hopefully that fixes it.

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