P2509

[Methos]

Had the first instance of an error light popping on this morning.  Fortunately, had the smarty with me to grab the code...

Getting a P2509 Powerdown Data Loss Error

Anyone got any insight?  Truck seems to be running fine despite whatever this is.

[Drew]

that code corresponds with a faulty ground to the ECM, Dead or dieing battery(s). I'm pretty sure Dave will have more insight to this one.

[RamItOne]

P2509 ECM/PCM Power Input Signal Intermittent

I dont have access to mitchell at the house and im sure dave will respond before i can look it up

[cumminnotstrokin]

I had that code  the  first year I had my truck, they ended up replacing my ECM after months of BS. It started with a dead battery cell that ended up frying the ECM, they replaced all of the wiring harnesses had the truck for a month before they figured it out

[RamItOne]

Damn that aint cheap, methos you under warranty?

[Methos]

Nope.  Just turned 103,000 on the clock today.

[RamItOne]

well that sucks. could always go to a salvage yard and pick it up, im lucky my buddy is friends with the guy that runs http://www.greenleafauto.com/ around here. always getting good deals. theyve got a contract with ferd. right now have 6 '08 expeditions up there that have flood damage. my buddy a few months back bought all three rows of eddie bauer leather seats for 70 bucks. clean no defects. gotta love a bargain.

[cumminnotstrokin]

I would check the batteries first. I just remembered that they were messing with my battery temp sensors at the very beginning, I hope this helps. you can go back in the other forum and pull my history I was talking with cumminalong on it I believe it started in December of 06 if not Jan of 07

[Parts/Service]

 possible causes

POOR CONNECTIONS AT THE BATTERIES
LOW BATTERY VOLTAGE
OPEN FUSED B+ TO ECM
OPEN GROUND CIRCUIT
BATTERY + SHORTED TO OTHER CIRCUITS
RETURN CIRCUIT SHORTED
BATTERY + SHORTED TO GROUND


There is a TSB on this 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.
MODELS:
2006 - 2007 (DH/D1) Ram Truck (2500 / 3500)
NOTE: This bulletin applies to vehicles equipped with a 5.9L engine (sales code
ETH) built on or before November 29, 2006 (MDH 1129XX).
SYMPTOM/CONDITION:
The customer may experience the illumination of the “Check Gauges” lamp on the
instrument panel cluster. Inspection of the gauges may reveal that the battery charging
gauge may read in the 11 volt range rather than in the 14 volt range. There may not be a
Check Engine / Malfunction Indicator Lamp (MIL) illumination.
Further diagnosis may reveal the following Diagnostic Trouble Codes (DTC's) have been
set:
P2502 - Charging System Error - Diesel
P2503 - Charging System Output Low - Diesel
P2509 - Powerdown Data Lost Error - Diesel

[Methos]

I checked all the connections and cleaned the battery terminals.  Did get a little gunk off the terminals, but nothing major really.  Cleared the code and it's been a week now without coming back.  So, I'm hoping it was just something not making good contact.