DTC P0111 [L3]

BME010200100W06

DTC P0111

IAT circuit performance problem

DETECTION CONDITION

• If intake air temperature is higher than engine coolant temperature by 40 °C {104 °F} with ignition key ON, the PCM determines that there is a IAT sensor performance problem.
Diagnostic support note
• This is a continuous monitor (CCM).
• MIL illuminates if 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 PCM detects the above malfunction condition during first drive cycle.
• FREEZE FRAME DATA is available.
• DTC is 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

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to next step.
No
Record FREEZE FRAME DATA on repair order, then go to next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Check for related Service Information availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to available Service Information.
• If vehicle is not repaired, go to next step.
No
Go to next step.
3
INSPECT POOR CONNECTION OF MAF/IAT SENSOR CONNECTOR
• Turn ignition key to OFF.
• Disconnect MAF/IAT sensor connector.
• Inspect for poor connection (damaged, pulled-out pins, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to Step 6.
No
Go to next step.
4
INSPECT IAT SENSOR
• Inspect IAT sensor.
• Is IAT sensor okay?
Yes
Replace MAF/IAT sensor, then go to Step 6.
No
Go to next step.
5
INSPECT POOR CONNECTION OF PCM CONNECTOR
• Disconnect PCM connector.
• Inspect for poor connection (damaged, pulled-out pins, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to Step 6.
No
Go to next step.
6
VERIFY TROUBLESHOOTING OF DTC P0111 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from PCM memory using WDS or equivalent.
• Start engine and run engine under FREEZE FRAME DATA condition.
• Is PENDING CODE of same DTC present?
Yes
Replace PCM, then go to next step.
No
Go to next step.
7
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
Yes
Go to applicable DTC troubleshooting.
No
Troubleshooting completed.