1) Turn the ignition switch to ON.
2) Read the data of EGR valve opening angle signal using Subaru Select Monitor.
NOTE:
For detailed operation procedures, refer to “READ CURRENT DATA FOR ENGINE”.
Is the measured value −24 deg or less?
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.