Knock/Combustion Vibration Sensor B Circuit Low

Where it lives

For P0332, the circuit described runs through the sensor. The description of P0332 reports a fault at the sensor.

Check these first

• A faulty knock sensor B
• A short to ground on the sensor B circuit
• Corrosion at the sensor B connector
• Low battery voltage
• A faulty ECM input

What to do next

1. Read knock sensor B on a scan tool
2. Inspect the sensor B connector and wiring
3. Check the sensor B circuit for a short to ground
4. Measure battery voltage and the charging system
5. Replace knock sensor B if the signal stays low
6. Clear the code and retest

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