Where are a list of Error codes for 1999 Dodge Ram 3500 cummins diesel?
ask your local dodge dealer
If you have the Detroit motor, you can read the fault codes off the dash. Call them in to any Freightliner dealer or Detroit Diesel mechanic, and they can tell you what those codes are. If you have the MBE4000, Cummins, or Caterpillar motors, you'll need to have the computer hooked up to read off the codes.