DTC P0453:00 [MZI-3.7]: Notes
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE
| DTC P0453:00 |
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 |
- Connector or terminal malfunction
- Short to the constant voltage supply circuit between fuel tank pressure sensor terminal A and PCM terminal 11
- Short to power supply between fuel tank pressure sensor terminal C and PCM terminal 1D
- Open circuit between fuel tank pressure sensor terminal A and PCM terminal 11
- Open circuit between fuel tank pressure sensor terminal B and PCM terminal 1AT
- Fuel tank pressure sensor power circuit and signal circuit are shorted each other
- Fuel tank pressure sensor malfunction
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 Courtesy of MAZDA MOTORS CORP.
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