code number 121 ap/tp sensor?
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code number 121 ap/tp sensor?
we put a brand new delco tps on the car. cleared the code with snap on. but it only sets the code when at the track in staging lanes. dont understand y it only does it there or anywhere. i have a hard time believing a delco sensor is bad. but things do happen. any help is appreciated
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switch em and yes it is just a test parameter. Its the min and the max values the PCM uses to run the test TPS% vs engine rpm. With a cammed car they wont match anymore and you have to either desensitize the test (EFILive has tables for this) or change the test values (Edit and HPTuners)
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is it possible that having the cutout open is affecting this in some way? and when i change it seems how its just a test aprameter it wont affect anything else correct
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#12
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You can find a good amount of info on the P0121 code right on our forum
http://www.hptuners.com/forum/showthread.php?p=101510
http://www.hptuners.com/forum/showthread.php?p=101510