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  1. 4th Gen Powertrain
    Hey folks, I got the dreaded Service DEF system 5mph Max message in 150 miles earlier this evening about 40 miles from home. When I got back home I read the code with my Bluedriver (only P207F) and cleared it. I took the truck back out for roughly a 10 mile jaunt to see if the CEL was going...
  2. 4th Gen Non-Powertrain
    My truck is complaining about Service DEF System - See Dealer. The DTCs are related to the downstream NOx reading low. I disconnected the feed line and electrical connector from the DEF injector and tested the injector with a multimeter at approximately 13 ohms. I was going to try to remove it...
  3. 4th Gen Cab & Chassis
    After almost 4 years of buying my used 2011 RAM 5500 rollback, the DEF system is acting up every now and then throwing odd codes and getting fluid contaminated from time to time. I really didn't want to remove it because my old man drives it and I don't want him breathing toxic diesel particles...
  4. 2013-2018 General Discussion
    Hi everyone, I am baffled and do not have a computer to tell me what to do. The stock 2013 Ram with 107,000 on it started acting up recently during a trip. Now I have lost boost and also power. The problem starts with the actuator. I took it off and checked the turbo “ all good “ actuator was...
  5. 4th Gen Cab & Chassis
    I'm having a few problems where my DEF Service message appears and disappears at random. Sometimes I get the 200 mile range and others I get a different one with less. I don't know what's going on. I took the truck to the dealer for a recent SCR catalyst recall where they replace it completely...
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