DTC P0452-00: Fuel Tank Pressure Sensor Low Input: Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0452:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Fuel tank pressure sensor low 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 drops below a minimum allowable calibrated parameter.
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| Fail-safe |
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| Possible cause |
- Fuel tank pressure sensor connector or terminals malfunction
- PCM connector or terminals malfunction
- Short to ground in any of the following fuel tank pressure sensor circuits.
- Short circuit in fuel tank pressure sensor signal circuit and ground circuit
- Open circuit in any of the following fuel tank pressure sensor circuits.
- Fuel tank pressure sensor malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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