P1244high severityPowertrain
Wastegate Control Solenoid Valve Low Input
on 1997 Subaru Impreza 2.2L H4 · AWD
What this code means
The PCM has detected a low-input signal from the wastegate control solenoid valve circuit. This solenoid regulates boost pressure on turbocharged Subaru engines by controlling the wastegate.
Symptoms
- Check Engine Light
- Overboosting condition
- Boost fluctuation
- Loss of power under boost
- Turbo system warning
Common causes
- Faulty wastegate control solenoid
- Wiring short to ground in solenoid circuit
- Corroded solenoid connector
- Boost control system vacuum leak
- PCM driver circuit failure
Diagnostic steps
- Test wastegate solenoid resistance
- Check solenoid wiring for shorts to ground
- Inspect solenoid connector for corrosion
- Verify boost pressure readings on scan tool
- Command solenoid with scan tool and verify operation
Repair notes
Replace the wastegate control solenoid if faulty; repair wiring shorts in the solenoid circuit.
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P0002
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P0003
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P0004
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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
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1