General Information

Engine Control
P0451 Evaporative Emission System-Pressure Sensor Range / Performance - General Information

Component Location





General Description

The Evaporative system monitoring is made by using Natural Vacuum Leak Detection (NVLD).
The leak detection is made by using two components.
The "NVLD Sensor module" which incorporates the NVLD pressure switch and temperature sensor.
And the canister purge valve which is used as actuator to create vacuum in the tank when the engine is running.

DTC Description

P0451 is set when NVLD switch is stuck to close.

DTC Detecting Condition





Diagnostic Circuit Diagram