Possible Causes
- Battery disconnection resulting in errors in engine off time (short soaks may look like long soaks)
- Electric block heater applied and not detected
- Fuse failure
- Charge air temperature sensor circuit, short circuit to ground, short circuit to power, open circuit, high resistance
- Connector is disconnected, connector pin is backed out, connector pin corrosion
- Charge air temperature sensor failure
- Air charge coolant pump and control circuit, short circuit to ground, short circuit to power, open circuit, high resistance
- Air charge coolant pump relay failure
- Air charge coolant pump failure