Error code
OBD2 P0333
OBD2P0333
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Knock Sensor 2 Circuit High.
Severity
moderateCan drive, but performance issues may occur.
Summary
P0333 indicates that there is an issue with Knock Sensor 2 on bank 2 of your engine, specifically a high input signal.
Symptoms
- Lack of power
- Engine hesitation
- Pinging or knocking sounds
Common Causes
- Failed knock sensor
- Fault in the knock sensor circuit
- PCM failure
Diagnosis
- Visually inspect the sensor and connection.
- Perform a basic test of the knock sensor using a timing light or scan tool.
- Test the sensor output with a multimeter to check for AC voltage when tapping near the sensor.
- Check the circuit continuity between the sensor and PCM.
Fixes
- Replace the faulty knock sensor if it is determined to be bad.
FAQ
What does P0333 mean?
P0333 indicates a high input signal from Knock Sensor 2 on bank 2 of the engine.
How do I diagnose P0333?
Diagnose by visually inspecting, testing sensor output with multimeter, and checking circuit continuity between sensor and PCM.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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