Trouble codes › P0330
P0330 Knock Sensor 2 Circuit (Bank 2)
Ignition and misfire
P0330 means the engine computer isn't getting a usable signal from knock sensor 2 (bank 2).
The engine computer isn't getting a usable signal from knock sensor 2, which listens for knock on bank 2 of a V-engine. It usually retards spark timing to be safe.
Usually drivable, but expect less power and worse fuel economy. Avoid heavy loads, and stop if you hear knocking.
Common causes
- Damaged wiring or a corroded connector
- A failed knock sensor
- Water in the harness under the intake (common on some V8s)
- A sensor not torqued to spec
Symptoms
- Check-engine light
- Sluggish acceleration, worse fuel economy
What to check first
- Inspect the bank 2 knock sensor wiring and connector.
- Check the sensor's resistance or output.
- Look for service bulletins on the knock sensor harness for your engine.
- If both P0325 and P0330 are set, suspect shared wiring or a harness problem first.
What does P0330 mean on your vehicle?
The likely cause depends on your engine. iRepair researches your exact year, make, model and engine (service bulletins, recalls and owner reports) and tells you what to check first. Your first 3 questions are free.
Ask iRepair about P0330No scanner? Most auto parts stores read check-engine codes for free.
Related codes
General guidance for P0330 on most vehicles. Some makers use the same code a little differently; confirm in the service information for your vehicle, put safety first, and see a professional when in doubt.