Code 538

NorthrnSCownr

Registered User
I got a system pass on KOEO but what could cause this 538? :confused:

:Insufficiant RPM change during dynamic response test
or invalid cylinder balance test -throttle position movement
or Invalid cylinder balance test-cylinder id problum
Any help appreciated,
Tom
 
Hey

I've done this test and you have to give the motor throttle at the correct time or you will get this code. So next time it tells you to push the throttle down do it. When I first did it I held it wide open and it wound up high past the red line then faded off all by itself with the gas pedal still on the floorboard I guess it is a safety gaurd so you don't blow it up as soon as you let off the gas the throttle position sensor will fall and you can rev it up again. You have to rev it up high to get a good CBT test you might even hit the rev limiter I know mine shuts down at 6900 RPM A nice safe guard. So I held it at the red line till it fadded good luck. The old fashion way to check cylinder blance is do a compression check and a fuel injector drop test. It is always good to double check.
 
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