DTC P003A: Turbocharger/Supercharger Boost Control "A" Position Exceeded Learning Limit: Notes
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
Trouble symptom:
- Poor driving performance
- Poor acceleration
- 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 (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is DTC other than P003A displayed? (Current code)
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 [Electric Waste Gate Valve Position Sensor Learning Value at the Full-closed Position].
NOTE: For detailed operation procedures, refer to "COMMON (DIAGNOSTICS)". Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR .Is the value in [Electric Waste Gate Valve Position Sensor Learning Value at the Full-closed Position] less than -3 mm (-0.12 in) or more than 4.3 mm (0.17 in)?
Yes: Go to 3.
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 again.
NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness or temporary contamination and clogging at the valve port may be the cause. - CHECK APPEARANCE OF TURBOCHARGER (ELECTRONIC WASTEGATE VALVE)
.
- Turn the ignition switch to OFF.
- Remove the turbocharger. Ref. to INTAKE (INDUCTION) (H4DOTC)>TURBOCHARGER>REMOVAL .
- Check the appearance of turbocharger to make sure that there is no foreign matter pinched in the electronic wastegate valve.CAUTION: Do not remove the electronic air by-pass valve and electronic wastegate valve since they are non-disassembled parts.
Is the check result OK?
Yes: Replace the turbocharger. Ref. to INTAKE (INDUCTION) (H4DOTC)>TURBOCHARGER>REMOVAL .
No: Remove the foreign matters from the turbocharger.