P0331
Knock/Combustion Vibration Sensor B Circuit Range/Performance
P0331 is an OBD-II diagnostic trouble code meaning: Knock/Combustion Vibration Sensor B Circuit Range/Performance. Common causes: faulty knock sensor b, damaged sensor wiring harness. Estimated repair cost: $56–167.
Symptoms
- Reduced engine power
- Increased fuel consumption
- Detonation (knocking) in the engine
- Unstable engine idling
- Check Engine Light Illuminates
Causes
- Faulty knock sensor B
- Damaged sensor wiring harness
- Poor contact in the sensor connector
- Short circuit or open circuit in the sensor circuit
- Problems with the engine ECU
How to Fix
- Check the integrity of the sensor wiring harness
- Check the contacts in the sensor connector
- Check the resistance of the knock sensor (compare with the norm)
- Replace knock sensor if necessary
- Clear error memory and check if error is returned
Related codes
Error P0331 by Vehicle Brand
FAQ
What does the P0331 code mean?
P0331 is an OBD-II diagnostic trouble code that indicates: Knock/Combustion Vibration Sensor B Circuit Range/Performance
What causes a P0331 error code?
The most common causes of P0331 include: Faulty knock sensor B; Damaged sensor wiring harness; Poor contact in the sensor connector; Short circuit or open circuit in the sensor circuit.
How do I fix a P0331 diagnostic trouble code?
To fix P0331: Check the integrity of the sensor wiring harness. Check the contacts in the sensor connector. Check the resistance of the knock sensor (compare with the norm). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0331?
Limited driving only, diagnose soon
How much does it cost to fix P0331?
The estimated repair cost for P0331 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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