Error code
OBD2 P0328
OBD2P0328
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Knock Sensor 1 Circuit High.
Severity
moderateCan drive, but performance issues may occur.
Summary
P0328 indicates that the knock sensor on bank 1 of your engine is producing an abnormally high input signal to the PCM.
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 readings.
- 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 P0328 mean?
P0328 indicates a high input signal from the knock sensor on bank 1 of your engine.
How do I diagnose P0328?
Diagnose by visually inspecting, performing basic tests with a timing light or scan tool, and testing circuit continuity between the 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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