Question about 2003 Cadillac Deville
This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
Keep in mind that the P0442 is many times caused by a bad or loose fuel cap or fueling while the engine is running. If the cap does not fix the problem there is a machine that needs to be connected to the vehicle to help find the leak by pumping inert smoke into the system.
Hope this helps.
Posted on May 06, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 24, 2017 | 2004 Pontiac Grand Am
Jul 11, 2014 | Mazda Cars & Trucks
Jun 05, 2014 | 2004 Chevrolet Avalanche
May 16, 2014 | 2002 Subaru Impreza
Aug 24, 2011 | 2002 Jeep Grand Cherokee
P0305....Cylinder 5 Misfire Detected
P0442....Evaporative Emission Control System Leak Detected (small leak)
P0455....Evaporative Emission Control System Leak Detected (gross leak)
Feb 11, 2011 | 2001 Dodge Caravan
Aug 06, 2010 | 1996 GMC Jimmy
Oct 06, 2009 | 2001 Hyundai Elantra
Oct 15, 2009 | 2002 Ford Taurus
127 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: