P0329 OBD II Trouble Code Knock Sensor Circuit Intermittent (Bank 1)

Symptoms of P0329 OBD II Trouble Code

  • Diminished engine performance
  • Hesitation upon acceleration
  • Loud noises from the engine area
  • Decreased fuel efficiency

Common Causes of P0329 OBD II Trouble Code

  • Defective knock sensor/s
  • Internal engine malfunction
  • Ignition misfire/s
  • Contaminated or substandard fuel
  • Defective knock sensor control wiring and/or connectors
  • Bad PCM or a PCM programing error

Severity of P0329 OBD II Trouble Code

If the PCM detects a degree of knock sensor voltage indicative of a spark detonation; it may retard ignition timing and no knock sensor control code may be stored. If the PCM detects a level of knock sensor voltage that indicates a more severe engine noise (such as a connecting rod contacting the inside of the engine block), it may discontinue fuel delivery and ignition spark to the affected cylinder and a knock sensor code will be stored.