08 Dodge Ram 2500 Code P0700

[RamPower]

Hi,

My 08 Ram 2500 6.7 has been acting up for a while. The transmission sometimes shifts from 1st to 4th. I noticed it does it as temp gets higher. The code p0700 shows up and I did a little research and I'm thinking about replacing the valve body and shift solenoid. Can anyone help me out with any ideas the transmission shifts good when it's not acting up..

 

[transe]

P0700 is a flag code that sets (in the ECM) to tell you there is some other fault set in the TCM. You should have a dealer or shop read the TCM codes; that will explain what's going on.

Trans shifting 1st to 4th is called "logical limp-in" and is in response to a Gear Ratio Error fault (slippage within the trans). The specific code(s) that are set will indicate which gears the trans slipped in. I would suspect you have a burned OD clutch pack. For any clutch that is bad (OD or otherwise), you have to pull the trans and tear it down to repair. A valve body or solenoid by itself will likely not fix it.

 

[RamPower]

I just got the transmission rebuilt though replaced everything about 3 weeks ago still doing the same thing.

 

[transe]

I just got the transmission rebuilt though replaced everything about 3 weeks ago still doing the same thing.

Have a dealer check the TCM fault codes, and also read the DTC Event Data (a block of data that gets written into memory whenever a fault sets). That will show you what was going on when the fault set. If the trans was just rebuilt, then maybe you have a bad speed sensor reading (due to a wiring problem), which could cause a Gear Ratio Error and logical limp-in.