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po405 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 jimbo-jim User Aug 18, 2019, 7:45 AM Post #1 of 4 (1664 views) po405 Sign In I have a 2000 Silverado 2500 I got a code of po405 so I checked the wiring and everything looks good. so I bought a egr valve and for about a week no problems and now it's back on well it's pending. any sugestions Hammer Time Ultimate Carjunky / Moderator Aug 18, 2019, 8:35 AM Post #2 of 4 (1662 views) Re: po405 Sign In You could have some carbon buildup in the engine getting caught in the pintle. There could be an issue with the wiring or plug connections It could be a bad PCM ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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. jimbo-jim User Aug 18, 2019, 6:29 PM Post #3 of 4 (1640 views) Re: po405 Sign In thanks for those tips . but let me back up a bit before the code po405 I had a po449 evap valve current so i'm wondering if the two could have something to do with each other ? the 449 code is not coming up and the 405 is now pending. Hammer Time Ultimate Carjunky / Moderator Aug 26, 2019, 9:02 AM Post #4 of 4 (1577 views) Re: po405 Sign In I don't believe they have anything to do with each other. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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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