DTC P0328: Notes
DTC P0328 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0328 |
Knock sensor circuit high input |
| DETECTION CONDITION |
- PCM monitors input signal from knock sensor when engine is running. If input voltage at PCM terminal between 81 and 3 is above 3.75 V
, PCM determines that knock sensor circuit is malfunctioning.
Diagnostic support note
- This is a continuous monitor (CCM).
- The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
- PENDING CODE is available if the PCM detects the above malfunction condition.
- FREEZE FRAME DATA is available.
- DTC is stored in PCM memory.
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| POSSIBLE CAUSE |
- Knock sensor malfunction
- Connector or terminal malfunction
- Short to power circuit in wiring between knock sensor terminal A and PCM terminal 81
- Short to power circuit in wiring between knock sensor terminal B and PCM terminal 3
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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