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DTC P0328: Notes

DTC P0328[L3 WITH TC] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0328 Knock sensor circuit high input
DETECTION CONDITION 
  • PCM monitors the input signal from the knock sensor when the engine is running. If the input voltage at the PCM terminals between 2V and 2U is below 4.9 V  , the PCM determines that the knock sensor circuit has a malfunction.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTCs are stored in the PCM memory.
POSSIBLE CAUSE 
  • Knock sensor malfunction
  • Connector or terminal malfunction
  • Short to the power supply in the wiring harness between knock sensor terminal A and PCM terminal 2U
  • Short to the power supply in the wiring harness between knock sensor terminal B and PCM terminal 2V
  • PCM malfunction
G04859390Courtesy of MAZDA MOTORS CORP.
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