DTC P0328: Notes
DTC P0328 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 2P and 2S 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 first drive cycle.
- FREEZE FRAME DATA is available.
- DTCs are stored in the PCM memory.
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| 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 2S
- Short to the power supply in the wiring harness between knock sensor terminal B and PCM terminal 2P
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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