The knock sensor signal is above the expected range. The driver may notice weak power or higher consumption.
Likely causes, most common first
- Short to voltage in the wiring
- Faulty knock sensor
- Real engine knock or mechanical noise
- Damaged connector
Parts usually involved
- Knock sensor
- Sensor connector
- Wiring harness
Test before you replace
Test the wiring for a short to voltage and listen for mechanical noise before replacing the sensor.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.