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

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 (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	-
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 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

Monitor item (Definition)	Unit/Condition	Condition/Specification (Reference)
FTP	KPa {MPa}, mBar {Bar}, psi, in H20	Displays the fuel tank pressure
	V	Fuel tank pressure is equal to barometric pressure: approx. 2.6 V