What does poor quality DEF mean?
What does poor quality DEF mean?
In short, this message means that the NOx emissions measured at the outlet NOx sensor are higher than the computer expects for a given situation.
What transmission is in a 2011 Duramax?
Allison 1000
Chevy/GMC Duramax – 2011-2016 GM 6.6L LML Duramax – Transmission – Allison 1000 6 Speed.
Is the Def fluid quality poor on a GMC Duramax?
According to Dennis Dillon techs who are (supposed) to be GM certified. They said there is no DTC errors. Those were cleared. #2 NOx sensor replaced and on the DIC portion it shows def fluid quality poor and shows speed restriced to 55mph.
Why is my Def warning not clear on my GMC?
If the vehicle has been driven for a few miles, the ignition has been turned off (allowing the ECM to go to sleep for at least 5 minutes), and the DIC will not update, the message may have become latched into the ECM. There are three different reasons for a DEF (Diesel Exhaust Fluid) warning message to set.
Why does my GMC 2500 have a Def low message?
During cold temperature conditions a dealer may encounter a customer vehicle with a DEF low message or a speed limiting message even if the vehicle is known to be full of DEF. Additionally, the dealer may encounter a customer vehicle with a DEF range that does not reset after a refill event.
What’s the speed limit on a GMC Duramax?
Select “Normal” as the Programming Type. Note: The vehicle will be speed limited to 5 mph (8 kph) if part one of the calibration is left in the ECM (If for some reason part two of the calibration is not installed).
According to Dennis Dillon techs who are (supposed) to be GM certified. They said there is no DTC errors. Those were cleared. #2 NOx sensor replaced and on the DIC portion it shows def fluid quality poor and shows speed restriced to 55mph.
During cold temperature conditions a dealer may encounter a customer vehicle with a DEF low message or a speed limiting message even if the vehicle is known to be full of DEF. Additionally, the dealer may encounter a customer vehicle with a DEF range that does not reset after a refill event.
What does low DEF Diesel Exhaust Fluid mean?
So Friday I had the “Diesel Exhaust Fluid Quality Poor Message” pop up on the dash with a 100 mile warning. I restarted the truck with no warning. I drove about 25 miles and the “Low DEF” message came on.
Why does my GMC Truck have a Def warning?
In operating temperatures of -9C / 15F or less, customers may comment on an “Exhaust Fluid Range” message displaying on the DIC even though the DEF fluid has been filled or is known to be full. This is likely because the truck is in the “Frozen Tank Status”. This is usually an intermittent condition.
