Codes 539, 124

[Manatee]

I've got a '95 automatic giving the following two codes, along with the Midwest SHO Specialist description.

539 - "System shows voltage at PCM pin 10. Is A/C on? "
124 - "Throttle position voltage was higher than expected"

Any ideas on a how-to fix these? I'm not even sure what the description on 539 is telling me about the a/c, or even if the a/c is the problem. The Check Engine light comes on after about 10 minutes of driving with the a/c runnning and a/c not running.

Many thanks in advance for any clues.

Vince

 

[Manatee]

any ideas, anyone ? thank you

 

[BlackandBlue]

I am having the small codes. No worries with the 539, but I have a brand new TPS sensor (along with several other new sensors). I am getting an intermediate CE. BTW, both O2 were just replaced as well.
Thanks,
Eric

 

[Jaz2099]

Autozone,advanced,etc .... tests tp sensors -- easy part to replace. 539 ---- a/c or defrost on during koeo test. You turn off a/c, defrost while running koeo test and you should have no code for that.