P0012 Subaru Forester
Intake Camshaft Position Timing Over-Retarded (Bank 1) · Powertrain Code · High · Repair: Moderate
What is P0012?
The intake camshaft timing on bank 1 is more retarded than the ECM commanded.
When the Subaru Forester triggers code P0012 (intake camshaft position timing over-retarded (bank 1)), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the Subaru Forester.
This repair is rated moderate, meaning some experience and specialty tools required.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Subaru Forester.
Common Causes on Subaru Forester
- Stuck AVCS actuator due to sludge or varnish in FB engine
- Low oil level causing insufficient pressure to AVCS system
- Failed AVCS oil control valve stuck in retard position
- Oil consumption issue on FB25 leaving insufficient oil for AVCS
Symptoms
- Check Engine Light on
- Hard cold starts
- Rough idle
- Poor low-RPM torque
- Increased fuel consumption
Notes for Subaru Forester
FB25 engines in Crosstrek, Outback, and Forester may consume oil; verify oil level is full before diagnosing AVCS codes.