DTC P0201: Notes
DTC P0201 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0201 |
Injector circuit/open cylinder No. 1 |
| DETECTION CONDITION |
- If the fuel injection verification signal is not input at 255 times
continuously even though the PCM drives the fuel injector No. 1, the PCM determines that there is an open circuit in the fuel injector No. 1 control circuit.
MONITORING CONDITION
- The following conditions are met:
- Engine speed: 4, 000 RPM or less
- Battery voltage: 10.03 V or more
- Fuel injection control: except during fuel cut
Diagnostic support note
- This is a continuous monitor (CCM).
- The 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 |
- Fuel injector No. 1 malfunction
- Injector driver module malfunction
- Connector or terminal malfunction
- Open circuit between fuel injector No. 1 terminal B and injector driver module terminal 1F
- Open circuit between fuel injector No. 1 terminal A and injector driver module terminal 1E
- Short to power supply between fuel injector No. 1 terminal A and injector driver module terminal 1E
- Short to ground between fuel injector No. 1 terminal B and injector driver module terminal 1F
- Short to ground between fuel injector No. 1 terminal A and injector driver module terminal 1E
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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