DTC P0111: IAT Sensor Circuit Range / Performance Problem; DTC P011B: IAT Sensor Circuit Range / Performance Problem
NOTE: Before you troubleshoot, review the general troubleshooting information - Refer to: HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS or How to Troubleshoot the CVT System (CVT) .
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P0111 IAT Sensor Circuit Range/Performance Problem | |||
| P011B IAT Sensor Circuit Range/Performance Problem |
DTC (PGM-FI)
- Connector visual check:
- 1. Check for poor connections or loose terminals at these locations:
- MAF sensor/IAT sensor 1
- ECT sensor 1
- ECT sensor 2
Are the connections and terminals OK?
YES
Go to step 2.
NO
Repair the connections or terminals.
- IAT sensor performance check (low temperature):
- 1. Disconnect the following connector.
MAF sensor/IAT sensor 1 5P connector - 2. Remove MAF sensor/IAT sensor 1 .
- 3. Allow MAF sensor/IAT sensor 1 to cool to the ambient temperature.
- 4. Note the ambient temperature.
- 5. Connect MAF sensor/IAT sensor 1 to its 5P connector, but do not install it.
- 6. Turn the vehicle to the ON mode.
- 7. Quickly note the value of the IAT SENSOR in the DATA LIST with the HDS.
Signal Current conditions Values Unit IAT SENSOR (1) - 8. Compare the value of the IAT SENSOR (1) to the ambient temperature.
Does the value of the IAT SENSOR (1) differ 5.4 °F (3 °C) or more from the ambient temperature?
YES
Replace MAF sensor/IAT sensor 1 .
NO
Go to step 3.
- IAT sensor performance check (high temperature):
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
MAF sensor/IAT sensor 1 5P connector - 3. Using a heat gun, blow hot air on MAF sensor/IAT sensor 1 for a few seconds. Do not apply the heat longer than a few seconds or you will damage the sensor.
- 4. Connect MAF sensor/IAT sensor 1 to its 5P connector, but do not install it.
- 5. Check the IAT SENSOR (1) in the DATA LIST with the HDS.
Signal Current conditions Values Unit IAT SENSOR (1) Does the IAT SENSOR (1) change 76 °F (42 °C) or more?
YES
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at MAF sensor/IAT sensor 1 and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
NO