DTC P0453-00: Fuel Tank Pressure Sensor High Input: Notes
DTC P0453:00 PCM (SKYACTIV-G 2.5 - WITH CYLINDER DEACTIVATION) 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 in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
- PENDING CODE is available if the PCM detects the above malfunction condition during 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 2AJ
- 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 2AU
- Open circuit in wiring harness between fuel tank pressure sensor terminal B and PCM terminal 2AI
- 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.
Related PIDs
RELATED PID ITEM
| ITEM |
DEFINITION |
UNIT |
CONDITION/SPECIFICATION |
| FTP |
Fuel tank pressure input from fuel tank |
Pa {KPA}, mBar {BAR}, psi, in H20 |
- Ignition switched ON (engine off): Approx. -23 Pa {-2.3 kgf/m 2, -0.0033 psi}
- Idle (after warm up): -282- -46 Pa {-28.7- -4.7 kgf/m 2, -0.0409- -0.0067 psi}
- Racing (Engine speed 2, 000 RPM): -1.47- -0.869 kPa {-0.0149- -0.0089 kgf/cm2
, -0.213- -0.127 psi}
- Racing (Engine speed 4, 000 RPM): -1.69- -1.07 kPa {-0.0172- -0.0110 kgf/cm2
, -0.245- -0.156 psi}
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| Fuel tank pressure sensor voltage |
V |
- Ignition switched ON (engine off): Approx. 2.6 V
- Idle (after warm up): 2.2-2.62 V
- Racing (Engine speed 2, 000 RPM): 1.9-1.91 V
- Racing (Engine speed 4, 000 RPM): 1.73-1.76 V
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