P0441

DTC P0441 EVAP Emission Control System - Incorrect Purge Flow

DESCRIPTION

The evaporative emission control system prevents hydrocarbon (HC) vapors of the fuel tank from escaping into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The ECM controls the Purge Control Solenoid Valve (PCSV) to purge any collected vapors from the canister back to the engine for combustion. This valve is actuated by the purge control signal from the ECM and controls fuel vapor from the canister to the intake manifold.

Detecting Condition & Limp Home:

DTC DETECTING CONDITION

1. DTC Description
During "test of vapor generation" a new value from the tank pressure sensor is measured and compared with the start pressure at beginning of "test of vapor generation".

The ECM sets DTC P0441 if the pressure signal decrease occurs and the difference is below the predetermined threshold.

If same error code is set in the next driving cycle, the ECM illuminates the MIL.

2. Conditions for Setting the DTC

Step 1 - 3:

Inspection Procedure