P06B6 OBD II Trouble Code Internal Control Module Knock Sensor Processor 1 Performance

How to easily diagnose, repair, and info on causes of a P06B6 trouble code that indicates a detected failure of Internal Control Module Knock Sensor Processor 1.

Symptoms of P06B6 OBD II Trouble Code

  • Loud noises from the engine area
  • Diminished fuel efficiency
  • A variety of engine drivability symptoms
  • Other stored diagnostic trouble codes

Common Causes of P06B6 OBD II Trouble Code

  • Bad PCM or a PCM programming error
  • Defective knock sensor/s
  • Defective knock sensor control wiring and/or connectors
  • A bad controller power relay or blown fuse
  • Open or shorted circuit or connectors in the CAN harness
  • Insufficient control module ground

Severity of P06B6 OBD II Trouble Code

If the PCM detects a degree of knock sensor voltage indicative of an engine knock or severe spark detonation; it may retard ignition timing and a knock sensor control code may be stored.