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error codes: P0442, P0456 Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine ODB2 Fault Codes buck New User Apr 8, 2009, 4:11 PM Post #1 of 4 (6091 views)      error codes: P0442, P0456   2005 nissan pathfinder, 4 liter V-6, service engine soon light came on, no symptoms of any problem with emissions detected, however a rat or mouse got under hood and ate a couple of coolant hoses which I replaced. I just bought this vehicle a couple of weeks ago, used, with 19,500 mi. on it. the check engine light was not on, but after you clear codes they take a while to pop up again. I have an inexpensive CanOBD2 code reader made by innova, model 3100a the codes it reads are p0442 and p0456. both are evapporative emission system leaks detected (small and very small) Driveability and fuel economy seem uneffected. Do I need to service vehicle, and can I fix it myself? Loren Champlain Sr Veteran / Moderator Apr 8, 2009, 6:18 PM Post #2 of 4 (6086 views)      Re: error codes: P0442, P0456   buck; The EVAP codes (leaks) won't cause a drivability issue, but yes, you need to address them. A small leak can be a real pain to find. Visually inspect all of the hoses going from the engine compartment to the fuel tank. If you can't find the leak, a smoke test will. There is such a machine that introduces smoke into the system that can be seen with the naked eye or a black light. The problem with ignoring it, is if something else goes wrong, you won't know it because the check engine light is already on and you assume that it is because of the EVAP problem. When you go to run it through emissions, it will fail the test. Loren SW Washington dobbsgretta New User Sep 15, 2012, 6:20 PM Post #3 of 4 (3719 views)      Re: error codes: P0442, P0456   I have the same problem error code P0456 which is EVAP Purge system small leak solenoid NVLD switchi I am hoping that it solve itself hoping the light is off by morning. Hammer Time Ultimate Carjunky / Moderator Sep 15, 2012, 7:20 PM Post #4 of 4 (3714 views)      Re: error codes: P0442, P0456   This thread is 3 1/2 years old. Pl,ease don't respond to old threads. If you need help with something, just start a question of your own. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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