How to diagnose exhaust fluid quality poor message?
An Exhaust Fluid Quality Poor message does not always mean the fluid is contaminated or needs to be changed. Use the J26568 -Coolant and Battery Fluid Tester to test the fluid before deciding to discard it. If the dealer has found an Exhaust Fluid Quality Poor message with no DTCs, diagnose the condition
Where to find service exhaust fluid system bulletin?
If you see the “Service Exhaust Fluid System” and a “See Owner’s Manual Now” message displayed on the instrument cluster and scan the vehicle and find trouble codes P203D, P21AB, and P21B0, this bulletin may apply to you.
Do you need a new exhaust fluid system?
Speed Service exhaust fluid system see owner’s manual. Speed limited to 55 miles an hour talk to GMC dealer he said it needed a new exhaust fluid tank because some of the sensors were bad couldn’t just chan … read more
Do you need to reset diesel exhaust fluid system?
Vocational, Technical or Tra… Vocational, Technical or Tra… Service exhaust fluid system message stays on. Fluid is Service exhaust fluid system message stays on. Fluid is full. … read more
How to clear exhaust fluid quality poor message?
After making repairs use the SI Document titled “Reductant Fluid Quality Test (With or without DTCs)” to evaluate and clear the Exhaust Fluid Quality Poor DIC message. If the Reductant Fluid Quality Test does not complete, or the Exhaust Fluid Quality Poor DIC message is difficult to clear, please follow the description and suggestions below.
If you see the “Service Exhaust Fluid System” and a “See Owner’s Manual Now” message displayed on the instrument cluster and scan the vehicle and find trouble codes P203D, P21AB, and P21B0, this bulletin may apply to you.
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 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.
If the dealer has found an Exhaust Fluid Quality Poor message with no DTCs, diagnose the condition using the current SI diagnosis for DTC P20EE. After making repairs use the SI Document titled “Reductant Fluid Quality Test (With or without DTCs)” to evaluate and clear the Exhaust Fluid Quality Poor DIC message.
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.
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.
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.