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) (H4DO)>Read Diagnostic Trouble Code (DTC) .

   Is [P0072] or [P0073] displayed in 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.
     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 combination meter system normal?

   • Yes: Repair the poor contact of ECM connector.
   • No: Repair the combination meter system. Ref. to COMBINATION METER (DIAGNOSTICS)>Basic Diagnostic Procedure .