P0015moderate severityPowertrain
Exhaust Camshaft Position Timing Over-Retarded Bank 1
on 2004 Subaru Impreza 2.5L H4 · AWD
What this code means
The exhaust camshaft timing for Bank 1 is more retarded than commanded by the PCM.
Symptoms
- Check Engine Light
- Loss of power
- Rough idle
- Poor emissions
Common causes
- VVT solenoid failure
- Low oil pressure
- Oil sludge
- Timing chain wear
Diagnostic steps
- Check oil level and condition
- Test VVT solenoid
- Monitor cam position
- Check oil pressure
Repair notes
Replace VVT solenoid or service timing system.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0016
Crankshaft Position/Camshaft Position Correlation Bank 1 Sensor A