P0449

DTC P0449 EVAP Emission Control System Vent Valve/Solenoid Circuit

DESCRIPTION

The evaporative emissions system prevents hydrocarbon (HC) vapors from the fuel tank from escaping into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The Canister Close Valve (CCV) closes off the air inlet into the canister for leak detection of the evaporative emission system. The CCV also prevents fuel vapors from escaping from the canister. When the engine purges the HC vapors from the canister, the clean air comes into the canister through the canister air-filter and the CCV.

Detecting Condition & Limp Home:

DTC DETECTING CONDITION

1. DTC Description
The ECM measures pressure in the fuel tank by means of tank pressure sensor during all engine operating states except engine stop and start. The DTC P0449 is set if pressure is lower than predetermined threshold.

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

2. Conditions for Setting the DTC

Specification:

Schematic Diagram:

Step 1 - 3:

Inspection Procedure