2003 es300 Lexus missing knock sensor harness

Asked by Lexuses3001964 Jun 14, 2022 at 02:29 PM about the 2003 Lexus ES 300 FWD

Question type: Maintenance & Repair

I have a 2003 LEXUS ES 300 and my knock sensor harness went missing after

I had taken the car into repair shop to have struts changed will it harm engine if

I drive it I notice the rpm is higher then

1 Answer
155,715

James answered about a year ago

The knock sensor sends a signal to the computer (PCM) to retard the ignition timing if it hears a spark/knock in the engine. Sounds like the shop damaged the wiring harness and they can fix it for you for free! Also, the check engine light will be on and the vehicle won't pass emissions inspection with the light on. Hope that helps! Jim

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