This can make the system think that it is empty.
Did the check engine light come on and are you able to see what the error code is? A lot of the error codes dealing with the DEF, DPF, and SCR are usually only resettable via the dealer. There is most likely a problem with the DEF pump/level detection system in the tank. It shouldn’t matter how much or little DEF you added. I don’t know if AlphaOBD would be able to reset the codes. Where can I reset the service Def code?Ī lot of the error codes dealing with the DEF, DPF, and SCR are usually only resettable via the dealer. They found a stored code for a bad Nox sensor so they ordered up one and two weeks later when it came in they installed it and no more issues since I’m at 5010 miles now. What does service DEF system, see dealer mean?įor the next 2400 miles no issues then the CEL popped on with the message service DEF system see dealer immediately. Pretty sure all def systems are made by bosch, so this probably applies to all systems regardless of vehicle manufacturer. Most systems also have a def quality sensor so adding anything but good quality def will generate a code. What causes DEF system to generate a code? Knowing the code or codes that are set would be helpful. Can this message reset itself if it corrects itself or is it one of those things that is going to have to be reset regardless? Click to expand… There are several reasons that cause a DEF concern. I got a message that said Service Def System See Dealer. What does service DEF system see dealer mean? They said it didn’t have any codes in the system and was possibly a glitch. I took it to the dealer anyways and they stuck their code reader on it. DEF is required by law to make sure the emissions from the truck are less toxic.
One additional update that’s specific to the Cummins diesel-powered 2019 Titan XD is that the Diesel Exhaust Fluid (DEF) tank is now larger.