2012 3500 Code issues

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Paras

Junior Member
Joined
Jan 16, 2022
Posts
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Location
California
Ram Year
2012
Engine
6.7
Hello

Hope someone out there has a solution to my problem, any info would be greatly appreciated.

My truck has developed 3 codes that I believe are all connected? P2509, U1421 and P0381

P2509 Intermitent electrical signal to ECM

U1421 Implausable ignition key off time.

P0381 Glow warning lamp circuit malfunction.

And every once in a while I loose my Bus signal my dash and wipers go haywire and goes back to normal on its own?

My truck runs fine and everything seems to work Ok.

I did take my TIPM out and completely apart removed all the fuses relays and breakers washed it 99% alcohol, blew it dry reassembled and plugged it all back but made no difference in the codes.
 

SitKneelBend

Senior Member
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Jan 8, 2015
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Location
St. Louis
Ram Year
2014
Engine
3.6 Pentastar
Sometimes a bad battery can cause these issues. I've seen the haywire thing happen when the battery is extremely low in my truck.
 

climbit

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Mar 26, 2022
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Location
phila
Ram Year
2012
Engine
5.7 hemi
sounds like problem i had in my 2012 1500 took wim module apart and cleaned it with mass airflow cleaner , all codes disappeared , only sprayed where contacts are that turn
 
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