DTC P0072: Ambient Air Temperature Sensor Circuit "A" Low: Notes

DTC detecting condition: 

Immediately at fault recognition

1. CHECK DTC  .

   Check for DTC. Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>Read Diagnostic Trouble Code (DTC) .

   Is DTC P0072 or P0073 displayed? (Current malfunction)

   Yes:  Go to  2

   No:  Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

   NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
2. CHECK COMBINATION METER  .

   Check the combination meter system. Ref. to COMBINATION METER (DIAGNOSTICS)>Basic Diagnostic Procedure .

   Is the check result OK?

   Yes:  Repair the poor contact of ECM connector.

   No:  Repair the combination meter system. Ref. to COMBINATION METER (DIAGNOSTICS)>Basic Diagnostic Procedure .