P11A4
Camshaft Adjustment Actuator 'B' Cylinder 1
P11A4 is an OBD-II diagnostic trouble code meaning: Camshaft Adjustment Actuator 'B' Cylinder 1. Common causes: vvt solenoid valve malfunction, contamination or wear of the phase change mechanism. Estimated repair cost: $33–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine idling
- Dips during acceleration
Causes
- VVT solenoid valve malfunction
- Contamination or wear of the phase change mechanism
- Low or poor quality engine oil
- Problems with the electrical control circuit
- Camshaft position sensor malfunction
How to Fix
- Check the level and condition of the engine oil
- Diagnose the operation of the VVT solenoid valve
- Check the electrical control circuit of the mechanism
- Clean or replace the phase change mechanism
- If necessary, replace the camshaft position sensor
Related codes
FAQ
What does the P11A4 code mean?
P11A4 is an OBD-II diagnostic trouble code that indicates: Camshaft Adjustment Actuator 'B' Cylinder 1
What causes a P11A4 error code?
The most common causes of P11A4 include: VVT solenoid valve malfunction; Contamination or wear of the phase change mechanism; Low or poor quality engine oil; Problems with the electrical control circuit.
How do I fix a P11A4 diagnostic trouble code?
To fix P11A4: Check the level and condition of the engine oil. Diagnose the operation of the VVT solenoid valve. Check the electrical control circuit of the mechanism. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P11A4?
Yes, but get it checked soon
How much does it cost to fix P11A4?
The estimated repair cost for P11A4 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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