1) Start the engine.
2) Read the data of intake air temperature sensor signal using Subaru Select Monitor or general scan tool.
NOTE:
• Subaru Select Monitor
For detailed operation procedures, refer to “READ CURRENT DATA FOR ENGINE”.
• General scan tool
For detailed operation procedures, refer to the general scan tool operation manual.
Is the intake air temperature −40°C (−40°F) ?
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.
In this case, temporary poor contact of connector may be the cause.