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OBD-II Trouble Shooting Got a code reader? Find out what your GM car's Check Engine light is trying to tell you (and then turn Check Engine light off).

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Old 09-24-2009, 10:38 AM   #1
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Default P0325


Knock Sensor Circuit Malfunction

KS module reads KS to determine if excessive detonation
(knock) is present. If excessive knock is present, PCM will retard
timing until knock goes away. When KS module is missing or
malfunctioning, PCM will set DTC P0325.

You may notice problems including a lack of power and perhaps some hesitation.

  • The knock sensor is faulty and needs to be replaced
  • There is a wiring short/fault in the knock sensor circuit
  • Mechanical problem with the engine.
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