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Discussion Starter · #1 ·
ok today i check my ecu and i gave me an error code 538 this code has some thing to do with rpms changing to much when checking the engine just wondering how to fix this.
 

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I'm assuming this is the KOER test?

538 means it didn't receive the "goose" in the middle of the test. There's a part of the KOER procedure where you have to blip the throttle. Failure to do so throws the code.
 

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Discussion Starter · #3 ·
thanks but ill try it again one other question though could the timing belt also cause this it says it is off by 10 degrees.
 
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