code p2509 - Dodge Cummins Diesel Forum

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post #1 of 70 (permalink) Old 12-14-2008, 09:09 PM Thread Starter
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code p2509

Check engine light came on. Scanned it and it said that I had 1 code.(p2509 powerdowndata lost error)

Anyone have any ideas what this is?

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post #2 of 70 (permalink) Old 12-15-2008, 06:09 AM
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what year and engine truck do you have? Take a minute and fill out your signature, and we can help you out :thumbsup

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post #3 of 70 (permalink) Old 12-16-2008, 12:20 AM Thread Starter
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2007 cummins 5.9

2007 cummins 5.9 2500
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post #4 of 70 (permalink) Old 12-16-2008, 07:40 AM
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check your battery terminals, and make sure they are tight and not corroded. :thumbsup

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The problem is that common sense isn't so common anymore...
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post #5 of 70 (permalink) Old 12-16-2008, 07:58 AM
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Did you recently add any equipment that required grounding on the fender ground bolt? That ground in particular is sensitive to alteration and can cause that code if not tightened enough when reinstalled.

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post #6 of 70 (permalink) Old 12-24-2008, 12:08 AM
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TSB 18-001-07

Flash: Check Gauges Lamp Illuminates For Alternator Charging With DTC P2502, P2503,
or P2509
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (Cummins PCM) with new software.
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post #7 of 70 (permalink) Old 01-07-2009, 07:58 AM
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where is the fender ground bolt located? (besides on the fender

my 07 6.7 shows the p2509 code as well, but the TSB mentioned only says it is for the 5.9 cummins. any thoughts?

2007 2500 6.7
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post #8 of 70 (permalink) Old 01-07-2009, 08:05 AM
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mine threw the same code 3 times already ... i think my batts are going bad ... optima ...have me some waiting at oreillys

2006 CTD HIGHER POWER PERFORMANCE
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post #9 of 70 (permalink) Old 01-07-2009, 09:47 AM
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Quote:
Originally Posted by stewajw View Post
where is the fender ground bolt located? (besides on the fender

my 07 6.7 shows the p2509 code as well, but the TSB mentioned only says it is for the 5.9 cummins. any thoughts?
I am not sure if the 6.7 has it in the same spot, but it is pretty much right in the middle of the battery on the drivers side fender. It bolts right through with a 10 or 12mm bolt I think. For that matter, I don't know if that is the same place the ECM is grounded for the 6.7 vs 5.9 either.

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post #10 of 70 (permalink) Old 12-05-2010, 08:33 AM
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Mine just popped this code up this morning. I put the truck in high idle to warm up and it shut off maybe 3 minutes later. I go outside and it fires right back up but this code is present. Any ideas?

'09 6.7L Mega Laramie : CARLI 2.65 Suspension/Sway Bar/Hydro Bumps/Control Arms/U&L Stabalizers/Diff. Cover, REVMAX 68RFE, Arson III, TOYO M/T, Nitro 4.56's, Walker Evans, AD165, EFILive, 5"TBE, ISSPRO's, MagHytec's, H&S Deletes/RP, AFE Mega, LineX Rockers
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post #11 of 70 (permalink) Old 12-09-2010, 09:25 PM
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Same here! Mine popped up this morning too along with P0489, it cranked VERY slow and then fired up (made a funny noise in the engine compartment) but that code won't go away. I'm really thinking batteries are going bad and the cold is making it noticable...I'm still running the stock batteries from 07

Anyone any ideas?

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SOLD 07.5 Dodge 2500 4X4 6.7,Thuren Suspended, HS Tuning
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post #12 of 70 (permalink) Old 12-09-2010, 10:50 PM
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This just happened to me this morning. I went out to crank the truck and warm her up and nothing. Ultimately it was the batteries, but I get a CEL and the codes are P2509 and 0513.

Not sure what the deal is, but I'm thinking it has something to do when the truck loses power since we're all getting this with bad batteries. I'm driving it tomorrow and getting it reset at parts store and we'll see what happens.
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