General Information

P0498 Evaporative Emission System Vent Valve Control Circuit Low

General Information

Component Location





General 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.

DTC Description

If there is Short to ground in control circuit, PCM sets DTC P0498.

DTC Detecting Condition





Specification





Schematic Diagram





Signal Waveform