Circuit Description
Intake Air Temperature (IAT) sensor is a thermistor built into the air filter housing and is used to monitor temperature of air flowing into intake manifold. DTC is set when ECM detects a open or short in IAT sensor circuit. ECM will operate in fail-safe mode if DTC P0110 is set. Possible causes are:
- IAT sensor open or short circuit.
- IAT sensor
- ECM
NOTE:
If DTCs P0105, P0106, P0110, P0115 and P0120 are output together, inspect ECM terminal No. 9 (E2) ground circuit. Repair as necessary. See appropriate wiring diagram in WIRING DIAGRAMS article.