DTC P0453: Notes
DTC P0453 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0453 |
Fuel tank pressure sensor high input |
| DETECTION CONDITION |
- The PCM monitors the evaporative emission (EVAP) control system fuel tank pressure sensor input signal to the PCM. The test fails when the signal average jumps above a minimum allowable calibrated parameter.
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| POSSIBLE CAUSE |
- Fuel tank pressure sensor malfunction
- Connector or terminal malfunction
- Open circuit between fuel tank pressure sensor terminal A and PCM terminal 1AB
- Open circuit between fuel tank pressure sensor terminal B and PCM terminal 1 AL
- Short to the constant voltage supply circuit between fuel tank pressure sensor terminal A and PCM terminal 1AB
- Short to power supply between fuel tank pressure sensor terminal C and PCM terminal 1 U
- Fuel tank pressure sensor power circuit and signal circuit are shorted each other
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 Courtesy of MAZDA MOTORS CORP.
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