P0329
Knock/Combustion Vibration Sensor A Circuit Intermittent
P0329 is an OBD-II diagnostic trouble code meaning: Knock/Combustion Vibration Sensor A Circuit Intermittent. Common causes: knock sensor malfunction, open or shorted wiring harness. Estimated repair cost: $56–167.
Symptoms
- Reduced engine power
- Increased fuel consumption
- Unstable engine operation
- Check Engine Light Illuminates
Causes
- Knock sensor malfunction
- Open or shorted wiring harness
- Poor contact in the sensor connector
- Damage to wire shielding
- Engine ECU malfunction
How to Fix
- Check the integrity of the knock sensor wiring harness
- Check the condition of the sensor connector and the presence of oxides
- Check knock sensor resistance (must meet manufacturer's specifications)
- Replace the knock sensor if a malfunction is detected
- Check the sensor circuit for interference and replace the shielded wires if necessary.
Related codes
Error P0329 by Vehicle Brand
FAQ
What does the P0329 code mean?
P0329 is an OBD-II diagnostic trouble code that indicates: Knock/Combustion Vibration Sensor A Circuit Intermittent
What causes a P0329 error code?
The most common causes of P0329 include: Knock sensor malfunction; Open or shorted wiring harness; Poor contact in the sensor connector; Damage to wire shielding.
How do I fix a P0329 diagnostic trouble code?
To fix P0329: Check the integrity of the knock sensor wiring harness. Check the condition of the sensor connector and the presence of oxides. Check knock sensor resistance (must meet manufacturer's specifications). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0329?
Limited driving only, diagnose soon
How much does it cost to fix P0329?
The estimated repair cost for P0329 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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