DTC P0091:00: Notes
DTC P0091:00 (L3 WITH TC) DETECTION CONDITION AND POSSIBLE CAUSE
| DTC P0091:00 |
Fuel pressure regulator control circuit low input |
| DETECTION CONDITION |
- When the PCM turns the spill valve control solenoid valve off but the spill valve control solenoid valve control circuit voltage is low for 5 s
, the PCM determines that the spill valve control solenoid valve control circuit has malfunction.
MONITORING CONDITIONS
- The following conditions are met:
- Engine speed: 3, 00 RPM or less
- Battery voltage: 10 V or more
Diagnostic support note
- This is a continuous monitor (CCM).
- The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
- FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
- DTCs are stored in the PCM memory.
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| POSSIBLE CAUSE |
- High pressure fuel pump connector or terminals malfunction
- Short to ground in wiring harness between the following terminals:
- High pressure fuel pump terminal A-PCM terminal 2F
- High pressure fuel pump terminal B-PCM terminal 2G
- Spill valve control solenoid valve malfunction
- PCM connector or terminals malfunction
- Open circuit in wiring harness between the following terminals:
- High pressure fuel pump terminal A-PCM terminal 2F
- High pressure fuel pump terminal B-PCM terminal 2G
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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