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INFO FOR P0740 & P0783 CODES

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INFO FOR P0740 & P0783 CODES

  #1  
Old 10-11-2006, 09:18 PM
richs20a
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Default INFO FOR P0740 & P0783 CODES

1996 DODGE RAM 1500

Truck will not shift into 4th from 3rd. I checked Gov Pressure and is a little low,
maxing out around 40psi, too low for 4th (OD). I have 2 codes read when I had
a scanner put in it, P0740 & P0783. One is a TCC circuit and 3-4 shift problem.

Can anyone give me an honest opinion how to diagnose what is wrong and how
major it is? Or not??

I have read online a little but see many differing reasons..... what causes the PCM to
trigger this code??

Thanks, Rich
 
  #2  
Old 05-18-2013, 03:58 PM
zarenb
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Default ever find out?

Have you ever found out what cause not those codes? Same issue here on 98 ram van,no overdrive ever.otherwise it shifts fine. I just bought this van and see Dex/merc111 quarts in the back. Wondering I'd its full of this. Its supposed to have atf+3 or 4 ........correct?
Anyway,I'd like to hear what you did to repair
 
  #3  
Old 05-20-2013, 04:39 PM
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zman17
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ATF+4. And do you know if the tranny was changed with one from another year? BTW, props for searching.
 
  #4  
Old 05-21-2013, 06:44 AM
zarenb
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I was told it was reduilt...but can't tell for sure. Why do yo ask? If u are asking me?
Just weird that after I reset comp that would throw theses two code simultaniously
 
  #5  
Old 05-21-2013, 10:54 AM
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This thread was started 7 years ago. I don't evben know if the OP is still an active member.
 
  #6  
Old 05-21-2013, 05:47 PM
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Originally Posted by zarenb View Post
I was told it was reduilt...but can't tell for sure. Why do yo ask? If u are asking me?
Just weird that after I reset comp that would throw theses two code simultaniously
You didn't say in your original post that it was working fine before you reset the PCM. So where I was heading no longer matters. All I can say is try resetting it again and see what happens.
 

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