2008 gmc acadia evap system monitor code

#2008 GMC ACADIA EVAP SYSTEM MONITOR CODE DRIVER#
#2008 GMC ACADIA EVAP SYSTEM MONITOR CODE CODE#

#2008 GMC ACADIA EVAP SYSTEM MONITOR CODE CODE#

There are many potential causes of diagnostic trouble code P0442. Car with medium EVAP system leaks show very few symptoms much like those with a small leak. 02” in diameter or a large leak ( P0455), larger than. 020”-.040” in diameter as opposed to a small leak ( P0456), less than. In the case of P0442, it is a medium-sized leak, between. If the EVAP system does not maintain the pressure during the test, the ECM recognizes an evaporative emission control system leak. During the system leak test, the ECM closes the vent control valve and purge valve to seal the evaporative system. However, when the vehicle is turned off the ECM performs an EVAP system leak test to ensure the evaporative emission control system is working properly. The vent control valve is usually open when the engine is at normal operating temperature, and the purge volume control valve is commanded on when the ECM is ready to burn the built-up fuel vapors. The flow of the gas vapors from the charcoal canister to the engine air intake is controlled by a purge volume control valve. The vent control valve is controlled by the engine control module (ECM) and allows air to flow into the charcoal canister to purge the gas vapors into the engine air intake to be burned. The fuel vapors from the fuel tank are absorbed and stored by charcoal pellets in the charcoal canister. The evaporative emission control system (EVAP system) prevents fuel vapors from escaping into the atmosphere. Quick tips: Use the FIXD Sensor and app to diagnose P0442 yourself, see the most likely fix and cost for this diagnostic trouble code, access our Mechanic Hotline, and more.A driving duration with this problem of even just a few weeks can damage other engine system components. However, as with all check engine lights, it is recommended that you get it fixed as soon as possible so the engine can be running at the proper specifications to prevent further damage.

#2008 GMC ACADIA EVAP SYSTEM MONITOR CODE DRIVER#

Diagnosis: It is unlikely the driver will notice any symptoms with check engine light code P0442 other than a slight odor of fuel, a slight decrease in fuel economy, and the check engine light.Repair Urgency: Get this fixed within the next month to prevent drivability problems and excessive fuel consumption.

Issue Severity: LOW – Continued driving for a short period of time is okay.

P0442 definition : Evaporative emission control system leak (medium).

2008 gmc acadia evap system monitor code