Cylinder 1 Above Knock/Combustion Vibration Sensor Threshold

Where it lives

For P2336, the part to look at first is the sensor named here. The description of P2336 puts it on cylinder 1.

Check these first

• Low octane fuel causing knock in cylinder 1
• Carbon buildup raising cylinder 1 compression
• A failed knock sensor reporting false vibration
• An ignition timing fault advancing cylinder 1
• A loose or damaged cylinder 1 spark plug

What to do next

1. Read the knock sensor data and freeze frame on a scan tool
2. Check for other misfire or knock codes
3. Fill with the octane fuel the maker recommends
4. Inspect the cylinder 1 spark plug and ignition coil
5. Test the knock sensor and its wiring if no knock is audible
6. Clear the code and retest

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