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reading or clearing

  1. Possible to Clear Check Engine Light without Code Reading/Clearing Device.

    Maintenance and Service
    I need to change my knock sensor which I plan to do myself, I had a shop diagnose it. Will the check engine light clear itself once the part is replaced or do I have to take it to the shop to clear the code once the faulty sensor is replaced? Anyway to do it manually like on the older OBDI systems?