Question

my dodge ram throws high value codes for (at one time or another) all of the pcm sensors ...i.e. o2 sensor,ect,iat,tps....sensors are not bad.. ive replaced most all with new, even pcm itself...dont understand what or where the high values is coming from?

Answer 1

P0171 Fuel trim lean Bank 1

P0135 02 sensor heater perfromance Bank 1 Sensor 1

P0118 Engine coolant temperature sensor sensor circuit high

P0155 02 sensor Bank 2 Sensor 1 heater perfromance

Circuit high code are disconnection, If the ECT code a circuit high with MAP and Intake air temperature you need to check its connection which is from the PCM as the sensor ground.