Intake Air Temperature Sensor (IAT)

Condition(s):

DTC P0111 IAT circuit range/performance problem

Possible Source(s):
- Blocked air cleaner
- Poor air system sealing
- Engine breather leak
- Sensor out of range/short
- Harness open circuit
- Harness short
- Connector loose or corroded

Action(s) to take:
- GO to Pinpoint Test X P0111

DTC P0112 IAT sensor high voltage (low air temperature)

Possible Source(s):
- Sensor to ECM circuit open circuit or high resistance
- Sensor to ECM circuit short to high voltage
- Connector loose or corroded
- Sensor failure

Action(s) to take:
- GO to Pinpoint Test X P0111

DTC P0113 IAT sensor low voltage (high air temperature)

Possible Source(s):
- Sensor to ECM circuit short circuit to ground
- Sensor failure

Action(s) to take:
- GO to Pinpoint Test Y P0113

DTC P1112 IAT 2 sensor high voltage (low air temperature)

Possible Source(s):
- Sensor to ECM circuit open circuit or high resistance
- Sensor to ECM circuit short to high voltage
- Connector loose or corroded
- Sensor failure

Action(s) to take:
- GO to Pinpoint Test AA P1112

DTC P1113 IAT 2 sensor low voltage (high air temperature)

Possible Source(s):
- Sensor to ECM circuit short circuit to ground
- Sensor failure
- Supercharger intercooler failure

Action(s) to take:
- GO to Pinpoint Test BB P1113

Related Faults/Codes

Adaptive Fueling: