DTC P0327 Or DTC P0328: Condition

DTC P0327 is set when Engine Control Module (ECM) detects knock sensor voltage is 0.5 volt or less for 2 seconds. DTC P0328 is set when ECM detects knock sensor voltage is 5 volt or more for 2 seconds. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles. Possible causes are:

• ECM malfunction.
• Knock sensor malfunction.
• "RED" circuit malfunction.