Code 412, 632

[ACOK]

Anyone has experience with code 412, 632 for 93ATX? How you fix it?

Thanks

 

[Mike Kopstain]

You didn't press your over drive test button and you need to clean or replace your idle air bypass motor or check for vacuum leaks.

 

[Bizzy]

ACOK:
Anyone has experience with code 412, 632 for 93ATX? How you fix it?

I wonder what code 632 is...it's not on the SHOTimes list of codes. Are you sure you read the codes right? I'd try running them again just to be on the safe side to see if you come up with the same thing.

 

[Markus]

ACOK:
Anyone has experience with code 412, 632 for 93ATX? How you fix it?

Thanks

Diagnostic Trouble Codes (DTC) 632 and 653 indicate the Transmission Control Switch (TCS) was not cycled between engine "ID Code" and the "Goose Test" in Key On Engine Running (KOER) Self-Test.

Diagnostic Trouble Code (DTC) 412 indicates that during Engine Running Self-Test, engine rpm could not be controlled within the Self-Test upper limit band.Possible causes:
· Open or shorted circuit.
· Throttle linkage binding.
· Improper idle airflow set.
· Idle Air Control (IAC) solenoid contamination.
· Items external to Idle Air Control system that could affect engine rpm.
· Damaged IAC solenoid.
· Damaged Powertrain Control Module (PCM).

 

[Mike Kopstain]

Like I said.