P1328 Audi Code – Cylinder 4 Knock Control Limit Reached

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What are the possible causes of DTC P1328 Audi?

NOTE: The listed causes may not be a complete list of all potential problems and there may be other causes.

  • Low fuel level or fuel quality
  • Mass Air Flow (MAF) sensor failure
  • Low fuel pressure
  • Abnormal engine noise or faulty knock sensor
  • Faulty knock sensor
  • Knock sensor wiring harness is open or short-circuited
  • Poor electrical connection in the knock sensor circuit

How to repair DTC P1328 Audi?

Check the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

What are the possible symptoms of Audi P1328 code?

  • Check engine light on (or soon to be on engine maintenance warning light)

What does Audi P1328 code mean?

The Engine Control Module (ECM) monitors the knock sensor. The ECM sets the OBDII code when the knock sensor does not meet factory specifications.

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