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I had this same problem for the longest time and could not figure out why, I was told the batteries were connected wrong and the stealership told me I was going to have to replace the entire cluster because the internal computer was fried...I was immediately suspicious, if my internal computer was fried how would all my guages continue to work. Anyway I just said to myself truck still runs fine I'm not going to spend the $800 I was quoted for their "fix." After a while it seemed like the truck was having a hard time starting, my overhead MPG would constantely read 15.0, and would die quickly. Went to Oreileys and found out both my batteries were shot. Bought new batteries and truck fired up like new and never saw the code again and the overhead is working fine. Its been a good 6 months. Also before I realized the batteries were the problem I disconnected the batteries to try and clear the code it would work but it would come right back on within 30mins. If you already have new batteries I dont know what to tell you . Try the stealership maybe the can be nice and reflash the ECM and not quote you for a new cluster
2007 5.9L DODGE 3500 DUALLY, 6-SPEED MANUAL, 4" TURBO BACK EXHAUST, SILENCER RING MIA, S&B CAI, 2000W SYSTEM WITH PIONEER DD HEAD UNIT.
Thanks... I just replaced both batteries, code is still there.. Tried unhooking the batteries to clear the code and it would not clear at all like yours did... I have not had any problems with it starting or anything like that, the truck is running fine just can't figure out what to do about this code... Any other ideas?
Im right there with ya. Ive gotten this code in the past but the dealership just said they were stored codes. First time I got the code was about 3 months after having the truck. Second time was a few months ago, same explanation for the dealership. Batteries were cranking slow so I replaced with optima redtops about 2 weeks ago. I decided to drive another vehicle for a couple days and went to go start the truck this morning..... no crank. Batteries are @ 10v according to digital multimeter. Put them on the charger for a couple of hours and got the truck to crank and the engine light came on. Scanner read codes P2509 along with P0562. When first starting the truck, voltage was at 13.2v to 13.4v which is low considering first start voltage is supposed to be around 14.4v. My battery charger has a built in alternator checker and it says the alternator is no bueno. Taking to dealer first thing monday to hit them in the head with a hammer.
2006 5.9 2500 QC SLT (New) 2006 5.9 2500 QC (Sold)
2008 6.7 3500 MC (Sold) 2011 6.7 HO 3500 MC (Sold)
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