DTC P0453-00: Fuel Tank Pressure Sensor High Input: Notes
DTC P0453:00 DETECTION CONDITION AND POSSIBLE CAUSE
| DTC P0453:00 |
Fuel tank pressure sensor high input |
| DETECTION CONDITION |
- The PCM monitors the EVAP control system fuel tank pressure sensor input signal to the PCM. The test fails when the signal average jumps above a maximum allowable calibrated parameter.
Diagnostic support note
- This is a continuous monitor (CCM).
- The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.
- FREEZE FRAME DATA/Snapshot data is available.
- DTC is stored in the PCM memory.
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| FAIL-SAFE FUNCTION |
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| POSSIBLE CAUSE |
- Fuel tank pressure sensor connector or terminals malfunction
- PCM connector or terminals malfunction
- Fuel tank pressure sensor malfunction
- Short to power supply in wiring harness between fuel tank pressure sensor terminal C and PCM terminal 2M
- Fuel tank pressure sensor power supply circuit and signal circuit are shorted to each other
- Short to power supply in wiring harness between fuel tank pressure sensor terminal A and PCM terminal 2Y
- Open circuit in wiring harness between fuel tank pressure sensor terminal B and PCM terminal 2V
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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CAUTION:
- Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.