What does it mean?
This diagnostic code (DTC) is a generic powertrain code, meaning it applies to vehicles equipped with OBD-II. Although generic, specific repair steps may vary by make/model.
A knock sensor tells the engine computer when one or more of your engine’s cylinders are “knocking,” meaning they’re exploding the air/fuel mixture in a way that delivers less power and can damage the engine if prolonged.
The computer uses this information to adjust the engine so it doesn’t knock. If your knock sensor on bank #2 generates a low output voltage (perhaps below 0.5V), it will trigger a DTC P0332. This P0332 code may appear intermittently, or the Service Engine light may stay on continuously. Other DTCs related to knock sensors include P0325, P0326, P0327, P0328, P0329, P0330, P0331, P0333, and P0334.
Symptoms
You may notice driving issues including engine RPM fluctuations, power loss, and possibly some hesitation. There may be other symptoms as well.
Causes
Causes
Potential causes of a DTC P0332 include (but are not limited to):
The knock sensor is faulty and needs replacement
There is an open/short circuit/fault in the knock sensor circuit
The PCM/ECM has failed
Possible Solutions
Check the knock sensor’s resistance (compare it to factory specifications)
Inspect for broken/frayed wires leading to the sensor
Check the wiring and connections leading to/from the knock sensor and the PCM/ECM
Verify that proper voltage is reaching the knock sensor (e.g., 5 volts)
Check for proper grounding of the sensor and circuit
Replace the knock sensor
Replace the PCM/ECM