P0454

DTC P0454 EVAP Emission Control System Pressure Sensor Intermittent

DESCRIPTION
The evaporative system prevents hydrocarbon vapor escaping from the fuel tank into the atmosphere where it would form photochemical smog. Gasoline vapor is Collected in the charcoal canister. The Fuel Tank Pressure Sensor (FTPS) is an integral part of the evaporative monitoring system. The ECM monitors the FTPS signal to detect vacuum decay and excess vacuum. The FTPS measures the difference between the air pressure in the fuel tank and outside air pressure to checks purge solenoid valve operation and leak detection in the evaporative emissions system by monitoring pressure and vacuum levels in the fuel tank during purge solenoid valve operating cycles.

DTC Detecting Condition:

Specifications:

Schematic Diagram:

Step 1:

Step 2 - 4:

INSPECTION PROCEDURE