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Pickups Dodge Ram Dodge Ram Warning Lights and Trouble Codes
232 messages, Last post on Feb 09, 2010 at 10:05 AM
You are in the Dodge Ram Forum. Your Host is kcram
Check Engine light came on Sunday. The code that came up with it was P0440. Does anyone know what this code means. Tried calling the dealer and left a message. Has anyone had this problem?
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Replying to: fmurray33 (Nov 07, 2006 9:07 am) http://www.obd-codes.com/trouble_codes/index.php
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Replying to: fmurray33 (Nov 07, 2006 9:07 am) http://www.obd-codes.com/trouble_codes/index.php
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Replying to: corkscrew (Nov 07, 2006 10:54 am) 
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I have a 2002 dodge Ram 1500 w/ 109,000miles on it. I haven't had any trouble whats-so-ever until just this past week. I was on my way to get my inspection done and got a ticket for it. As I was driving my engine light came on so I ran to the auto parts store and they read a P1491. So I have done what you guys have said on the replacement of the AC rely - engine light is still on. Took the battery - and + off and then replaced the rely. Still on. I talked to the dealer and they said it could be anything. Odd? So, I have noticed that my AC is not running right at all. It does blow air but when at a light it is moist air and then when driving over 25mph it becomes cold again. I thought I might need to recharge the AC and I had it checked it was okay. What should I do? What else should I check? PLEASE HELP.
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Replying to: texmiller (Oct 23, 2006 9:46 am)
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Replying to: corkscrew (Oct 24, 2006 8:46 am) 1. on-off-on-off-on = worked for me and told me what was wrong. 2. Checked the fuse #39 - it was broken- replaced it. (this still didn't get ride of the engine light.) 3. Replace my AC rely. (this still didn't get ride of the engine light.) 4. Replace my Rateator rely. This fixed everything. In total I sent only 20 dollars to fix my truck. Thank you! 
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What does code P0442 mean?
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Replying to: ron44ron (Mar 22, 2007 3:50 pm) Basically this code means that the Powertrain Control Module (PCM) has recorded an event where the fuel tank could not be negatively pressurized (vacuum). This could be caused by refueling with the engine on, or this vehicle has a leak in the evaporative fuel system. On Dodge trucks the first suspect is usually the fuel cap is either not tighten correctly to 1/4 turn, or defective. Best regards, Dusty |
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