Knock Sensor 2 Circuit (Bank 2)
A general electrical fault in the bank 2 knock sensor circuit. The ECU monitors a piezoelectric sensor for engine vibration patterns associated with detonation; an open, shorted, or out-of-range circuit triggers this code.
Affected components
- Knock sensor
- Sensor wiring
Common causes
- High likelihood: Knock sensor failed
- Medium likelihood: Wiring/connector fault
Possible symptoms
- Check engine light on
- Power loss from defensive spark retard
- Increased fuel consumption
- Possible audible pinging under load
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.