william_neumann1
Corolla Hybrid Mixture Prep Error
Summary of the thread
A 2021 Toyota Corolla hybrid with 170,000 km exhibited issues such as engine light activation, rough idle, stalling, jerky acceleration, and reduced power. The suspected cause was a fuel injector problem, leading to an incorrect air-fuel mixture. After confirming a defective injector, replacing it resolved the issues.
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4 comment(s)
william_neumann1 (community.author)
Interesting. Did you also see reduced power and stalling? How did you narrow it down to the air-fuel ratio? I'm guessing a defective injection valve affects the mixture.
levi_sturm49
Yep, experienced power loss and stalling. Turns out, a faulty injector was dumping too much fuel. Messed up the air-fuel ratio big time. A workshop visit is advisable.
william_neumann1 (community.author)
Appreciate the insight. Confirmed: defective injector. Replaced it, all good now. Cost me 515€. Thanks for pointing me in the right direction!
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TOYOTA
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COROLLA
levi_sturm49
Sounds familiar. I've got a Corolla hybrid too. Had similar symptoms - engine light on and jerky acceleration. Have you checked your air-fuel ratio? A rich mixture can cause those problems.