I own a 2000 Dodge Caravan (3.0L V6, Automatic). I also own a 2002 Dodge Caravan SE. What is nice about the 2002 model is i can get a DTC error code display on the LCD screen.

I have the service manual for the 2000 model. It says i can hold down TRIP + RESET and turn the ignition to ON. WHen i do this i see nothing. The only way i was able to see something was when i released the TRIP+RESET and decided to press it again while in ON position. The LCD blanked out and displayed:

23
55

Over and over. What does this mean? Am i performing the DTC display correctly for this 2000 vehicle? I do not have access to a DRB scan tool

Thanks