DTC P0452-00: Fuel Tank Pressure Sensor Low Input: Notes
DTC DETECTION DESCRIPTION
| DTC P0452:00 |
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.
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
- Short to ground in wiring harness between the following terminals:
- Fuel tank pressure sensor terminal A-PCM terminal 2BB
- Fuel tank pressure sensor terminal C-PCM terminal 2Y
- Fuel tank pressure sensor signal circuit and ground circuit are shorted to each other
- Open circuit in wiring harness between the following terminals:
- Fuel tank pressure sensor terminal A-PCM terminal 2BB
- Fuel tank pressure sensor terminal C-PCM terminal 2Y
- Fuel tank pressure sensor malfunction
- PCM malfunction
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