DTC P0071: Ambient Air Temperature Sensor Circuit "A" Range/Performance: Notes
- -
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
NOTE: After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Basic Diagnostic Procedure>PROCEDURE .
- CHECK DTC
.
- Turn the ignition switch to ON.
- Using the Subaru Select Monitor or a general scan tool, read the DTC of [Engine]. Ref. to COMMON (diag)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is DTC other than P0071 displayed? (Current malfunction)
Yes : Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Diagnostic Trouble Code (DTC)>LIST .
No : Go to 2.
- CHECK DATA MONITOR
.
- Using the Subaru Select Monitor, read the value in [Ambient Air Temperature].NOTE: For detailed operation procedures, refer to the "Data Monitor" in HVAC System. Ref. to AIR CONDITIONER (DIAGNOSTICS)>DATA MONITOR .
- Read the change of the value in [Ambient Air Temperature] while heating and cooling the ambient sensor using a hair dryer.WARNING: Do not heat the part to the temperature where you cannot touch it with your bare hand in order to prevent burning yourself and protect the part.
Does the value of [Ambient Air Temperature] change between heating and cooling?
Yes : Repair the poor contact of ECM connector.
No : Replace the ambient sensor. Ref. to AIR CONDITIONER>AMBIENT SENSOR .
- Using the Subaru Select Monitor, read the value in [Ambient Air Temperature].