P CODES (POWERTRAIN) P1600 - P1699 P1639 Questions
Code P1639 5 Volts Reference Circuit 2
P1639 Reading 5 Volts At Throttle Position Sensor With Truck Switched On And About 7.5 To 11.4 With Truck Running. Trying To Find Out If I...
Asked by Radjohn
GM Dtc Code P1639
I Got A Check Engine Light On, Gm Code P1639 Five Volts Fer, Circuit 2. The Dealer Changed The Ac Pressure Sensor. The Light Came Back On...
Asked by Billy Miller
Obd Ll Code P1639
Why Isn't There A P1639 In The Code Page What Is This? My Check Engine Stays On.it Was Coming On Then Going Off.. My Ac The Clutch Is...
Asked by billmill5050
Obd Ll Code P1639
Where Would I Check "5 Volt Ref Circuit 2 "? I Do Not Know What That Means.
Asked by billmill5050