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) (H4DOTC)>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 INSTRUMENTATION/DRIVER INFO>Combination Meter System .

   Is the combination meter system normal?

   • Yes  : Repair the poor contact of ECM connector.
   • No  : Repair the combination meter system. Ref. to INSTRUMENTATION/DRIVER INFO>Combination Meter System .