DTC P0453-00: Fuel Tank Pressure Sensor High Input: Notes

DTC DETECTION DESCRIPTION

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 during the first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
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 2Y 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 2BB Open circuit in wiring harness between fuel tank pressure sensor terminal B and PCM terminal 2AJ PCM malfunction

CAUTION:

• Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.

Related PIDs

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/cm 2 , -0.213- -0.127 psi} Racing (Engine speed 4, 000 rpm): -1.69- -1.07 kPa {-0.0172- -0.0110 kgf/cm 2 , -0.245- -0.156 psi}
	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