DTC P025B-00: Fuel Pump Control Module Circuit Range/Performance Problem: Notes
WARNING: This page is about a different variant/trim than selected.
DTC P025B-00: (PCM, VIN M) DETECTION CONDITION AND POSSIBLE CAUSE
| DTC P025B-00: |
Fuel pump control module circuit range/performance problem |
| DETECTION CONDITION |
- When any of the following conditions is met:
- PCM detects overheating in fuel pump control module.
- Output duty ratio signal received from PCM is in error.
- Temperature detection thermistor in fuel pump control module is malfunctioning.
- Output signal from fuel pump control module is erratic (noise overlap).
Diagnostic support note
- This is a continuous monitor (CCM).
- The check engine light does not illuminate.
- FREEZE FRAME DATA is not available.
- Snapshot data is available.
- DTC is stored in the PCM memory.
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| FAIL-SAFE FUNCTION |
- Stops fuel pump control. (If overheating is detected in fuel pump control module)
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| POSSIBLE CAUSE |
- Fuel pump control module connector or terminals malfunction
- PCM connector or terminals malfunction
- Short to ground in wiring harness between fuel pump control module terminal 1B and PCM terminal 2D
- Short to power supply in wiring harness between fuel pump control module terminal 1B and PCM terminal 2D
- Open circuit in wiring harness between fuel pump control module terminal 1B and PCM terminal 2D
- Fuel pump control module malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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