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P2509 Code

17K views 4 replies 2 participants last post by  Dodgefarmer 
#1 ·
Just had this code show up for the first time: P2509
Description for it is: "ecm/pcm Power Input Signal Intermittent"
Had the electric charging idiot light show up at the same time then went away with the next start on its own.

I have 93,000 miles with no mods since have to live with Calif Smog checks. I cleared the code with my scanner. :help Is there anything I should look for or ignore it for now and see if it shows up again later:shrugs Or have dealer look at it before the 100,000 mile warantee is up? Prolly have to have the code return before dealer could check it out.
 
#2 ·
When my neighbor had his 07.5 it would do this ( lighting bolt) but no cel. All he had to do was shut the truck off and restart. As far as the code i would call your dealer and see what they say, it will/should come back if thers is an issue.
 
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#3 ·
I think I found the problem. This morning had a P0562 code show up, low voltage, and temp was 30* this am. Checked batteries and only 12.2 volts and tester indicated bad batteries. When running the alternator was show 15+ volts. These are still the orginal batteries.

Off to NAPA to get new ones.
 
#4 ·
I think i need to do the same thing, mine are still factory batteries.
 
#5 ·
New Batteries, cleared codes and all is good now:woot:
 
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