Thread: SES after chip install.
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Old Thu, February 9th, 2012, 10:03 PM
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Originally Posted by blue72 View Post
My truck is setting a SES light when I switch to the stock or high idle position. What would cause this? It goes away if I switch back to any of the other positions. I have had my chip for about 2 weeks now and its done this 3 or 4 times. Thanks.
Unknown....

You're using the same exact calibrations that hundreds of others are using (PMT1 standard calibrations)........

The ONLY thing it could be is that there is a code setting in a higher HP calibration where it's disabled and when you go back to stock (high idle is also a stock program), the code is no longer disabled and turns on the check engine light. If the engine doesn't stumble or stall, it's not a calibration problem. If you can find out what code is set, it would help.