Cylinder 2 Above Knock/Combustion Vibration Sensor Threshold

Where it lives

For P2337, the description names the sensor as the part involved. The description of P2337 puts it on cylinder 2.

Check these first

• Low octane fuel causing detonation in cylinder 2
• Carbon deposits raising cylinder 2 compression
• A faulty knock sensor sending a false signal
• Incorrect ignition timing for cylinder 2
• A worn cylinder 2 spark plug

What to do next

1. Read the knock sensor data on a scan tool
2. Look for accompanying misfire codes
3. Switch to the recommended octane fuel
4. Inspect the cylinder 2 spark plug and ignition coil
5. Test the knock sensor and wiring if the knock is not real
6. Clear the code and retest

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