My truck is throwing codes: 121, 500, and 1693. (For whatever reason, it throws 500 occasionally (VSS) and 1693 almost always.) Anyway, I did not see any posts addressing throwing 121 not accompanied by 122. 121 is APPS voltage does not agree with idle signal IIRC. Thoughts? I checked the voltage at the PCM and was only 1-2 mV different than what the sticker on the APPS read. Time for an APPS?
Thanks.
Thanks.