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DTC P0111 [L3 Turbo]

id0102b7803600

DTC P0111 | IAT circuit performance problem
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DETECTION CONDITION | • If the intake air temperature is higher than the engine coolant temperature by 18 °C {32.4 °F} for 1.2 s with the ignition switch turn in the ON position*, the PCM determines that there is an IAT sensor circuit range/performance problem. *: Ignition switch is in the ON position when 6 h or more have passed since the ignition switch was turned off. Diagnostic support note • This is a continuous monitor (CCM). • MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. • PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. • FREEZE FRAME DATA is available. • DTCs are stored in PCM memory.
POSSIBLE CAUSE | • IAT sensor malfunction • Poor connection at MAF/IAT sensor or PCM connector • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available? | Yes | Perform repair or diagnosis according to the available Service information. If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | INSPECT MAF/IAT SENSOR CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the MAF/IAT sensor connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 6.
No | Go to the next step.
4 | INSPECT IAT SENSOR • Inspect IAT sensor. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [L3 Turbo].) • Is IAT sensor normal? | Yes | Replace MAF/IAT sensor, then go to Step 6.
No | Go to the next step.
5 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 6.
No | Go to the next step.
6 | VERIFY TROUBLESHOOTING OF DTC P0111 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine and run the engine under the FREEZE FRAME DATA condition. • Is PENDING CODE for this DTC present? | Yes | Replace PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)
No | Go to the next step.
7 | VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [L3 Turbo].)
No | Troubleshooting completed.