2015 peterbuilt 579 auto with Cummings wont shift into gear

I am doing a quick search for you to try and get some information. So far I know that the trans fault code 31 is for MEIIR. "Momentary Engine Ignition Interrupt Relay". So far no quick fix answers...will post if I can find anything in the next few minutes. Stay Safe and Warm.

 

I am not much help with that but unhooking the batteries for a bit has got me moving again.

 

United....I don't know if this will work, but found it on a Google Search. It might reset the auto trans and allow you to get rolling again. I have not tried it, but it sure can't hurt anything.
Good Luck Driver, that's all I can find.


POSTED: 11/30/2015

OPTIONS
Retrieving Fault Codes

1. Place the shift lever in neutral.

2. Set the parking brake.

3. Turn the ignition key ON but do not start the engine. If the engine is already running, you may still retrieve codes, however, do not engage the starter if engine stalls.

4. To Retrieve Active Codes: Start with the key in the ON position. Turn the key OFF and ON two times within five seconds ending with the key in the ON position. After five seconds, the gear display begins flashing two-digit fault codes. If there are no active codes the gear display will show code 25. If there are inactive codes PD (Product Diagnostic mode) will be displayed. The vehicle will not start in PD mode. You must turn vehicle key OFF and allow the system to power down to exit PD mode before restarting. To start engine turn key off and wait for the transmission to power down.

5. To Retrieve Inactive Codes: Start with the key in the ON position. Turn the key OFF and ON four times within five seconds ending with the key in the ON position. After five seconds, the gear display begins flashing two-digit fault codes. If no codes are active, the gear display will flash code 25 (no codes).

6. Two digit fault codes will be displayed in the gear display. Record the codes. A one or two second pause separates each stored code, and the sequence automatically repeats after all codes have been flashed.

Clearing Fault Codes

1. Start with the key in the ON position. Turn the key OFF and ON six times within five seconds, ending with the key in the ON position.

Note: If the codes have been successfully cleared, the service lamp will come on and stay on for five seconds.

2. Turn the key OFF and allow system to power down.

2 TIMES

4 TIMES

6 TIMES

OFF ON

OFF ON

OFF ON

 

Their should be a large fuse down in the battery box check it.

 

Eaton has no such fault for trans code 31. Power down or battery disconnect to reset is your best bet to limp to the shop. Battery connections check?

 

Did this get fixed? What was the issue?