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DTC - Diagnostic Trouble Codes information

P0455

Powertrain Codes

P0455 - Evaporative Emission Control System Leak Detected (Gross Leak)

Symptoms

- Engine Light ON (or Service Engine Soon Warning Light) - Possible a noticeable fuel odor caused by the release of fuel vapors

Possible Causes

- Missing Fuel cap - Incorrect fuel filler cap used - Fuel filler cap remains open or fails to close - Foreign matter caught in fuel filler cap - Incorrect fuel tank vacuum relief valve - Leak is in line between intake m

When Detected

EVAP control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly.

Description

This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum. If pressure does not increase, the ECM will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition. The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed. EVAP System Example

Information For Specific Makes

P0455 CHEVROLET P0455 FORD P0455 INFINITI P0455 NISSAN