DTC P2509 Powerdown Data Lost Error
Registered User
Joined: Oct 2006
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I'm having issues with the P2509 code and the truck cutting out while driving. Just installed new batteries yesterday, which seemed to fix it until this morning when it cut out three times on the way to work.
Registered User
Joined: Oct 2006
Posts: 19
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Anyone have any additional information on this P2509 issue? I'm getting it intermittently only in cold weather. I've put in new batteries and sent it to the dealer for a checkup and they couldn't figure out what's wrong with it because they couldn't replicate the problem.
One thing I did notice is that when the truck is first started up, the tach will fluctuate between around 500-750 rpm with no change in the sound of the motor. Could this be something to check into somehow?
One thing I did notice is that when the truck is first started up, the tach will fluctuate between around 500-750 rpm with no change in the sound of the motor. Could this be something to check into somehow?
Registered User
Joined: Sep 2006
Posts: 1,240
Likes: 2
From: Elkton, MD
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
I have attached the diagnostic literature regarding the P2509 fault code.
P2509.pdf
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
I have attached the diagnostic literature regarding the P2509 fault code.
P2509.pdf
Registered User
Joined: Sep 2006
Posts: 1,240
Likes: 2
From: Elkton, MD
Since you recently replaced the batteries,remove and clean any corrosion from the cable ends(terminals) including the battery (Grounds off first). Then use a wire brush or battery terminal cleaning brush to clean the cable ends and battery terminals. Re install and tighten the terminals (ground cables on last).
Registered User
Joined: Dec 2008
Posts: 130
Likes: 0
From: SLC, UT
thanks for your time.
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