Red952

Alternator is reading 14.05V. I will start going through the sensor plugs. Would one sensor gone bad cause all these codes though? Seems odd that several of them would go bad all at once.

Hopefully I can get some clarity from you all, as I have been scratching my head. I have been posting on other sites throughout the years and have had good luck, but seems like this is the place for good electronics info. Truck info: 2002 2500 6 speed Smarty FASS 4" Turbo Back Prodigy Brake Controller BHAF List of codes from Smarty P0121 P0122 P0123 All APPS voltage codes, but I am getting high and low voltage codes P0177 WIF P1475 P1480 Aux 5 Voltage high and low P0342 P0342 Camshaft Position Sensor High and low P1693 Companion code P0500 No vehicle speed sensor P0462 Fuel Sending unit voltage low I am experiencing Dead pedal, surging and bucking while driving. Starts right up every time, but even at idle it has a mind of its own and revs up and down on its own. The WIF dash light comes and goes when it's acting up or idling fine. The cruise light comes on and off as it's idling or driving. The most recent time the check gauges dash light came on. I replaced my APPS sensor 2 years ago, about 20k miles ago when I was trying to diagnose issues. It was the VP44, so I replaced that. It has been running great since then, until now. I have reset the APPS sensor with no luck. I don't have the P0606 code for the ECM, but still seems like that may be the cause. Any and all help is greatly appreciated. Thanks in advance!