Incorrect Diesel Exhaust Fluid Quality Detected
Diesel Exhaust Fluid or Ad-Blue warnings are common among all Euro 6 vehicles but the JLR range seem to be particularly fussy. Wether is just that the Fluids Low, Quality is Incorrect or there is a Diesel Exhaust Fluid Dosing Malfunction we’ve seen them all and have the answers.
Don’t let the countdown get too low before resolving the issue as “No Engine Restarts Possible” means exactly what it says and you will need to get the vehicle recovered to a workshop to get the vehicle running again. The system can only be reset with proper diagnostic equipment.
Incorrect Diesel Exhaust Fluid Quality Detected
Despite what it says on the warning this very rarely means you have poor quality Ad-Blue in the tank. There is no special Ad-Blue just for Jaguars its all the same stuff wether its from the local supermarket or from the main dealer it will do the job just fine.
This warning usually means there is some kind of blockage/ failed component in the system stopping the Ad-Blue from making its way into the exhaust system.
Usually it is a case of replacing/cleaning a component on the system or even just a Simple Software Update.
The only way to diagnose this issue correctly is with proper diagnostic equipment like we have in our workshop.
Diesel Exhaust Fluid Dosing Malfunction
This is a more informative warning than the previously mentioned and essentially boils down to the same root cause. There is some kind of blockage/ failed component in the system stopping the Ad-Blue from making its way into the exhaust system.
Usually it is a case of replacing/cleaning a component on the system or even just a Simple Software Update.
The only way to diagnose this issue correctly is with proper diagnostic equipment like we have in our workshop.
Some of the possible Fault Codes related to this warning are listed below:
Jaguar / Land Rover - Fault P20B9 -13 Reductant Heater A Control - Open Circuit
Jaguar / Land Rover - Fault P2BAE -00 NOx Exceedance - NOx Control Monitoring System
Jaguar / Land Rover - Fault P2BAE -02 NOx Exceedance - NOx Control Monitoring System
Jaguar / Land Rover - Fault P2BAF -00 NOx System Driver Inducement Active
Jaguar / Land Rover - Fault P229F -28 NOx Sensor Circuit Range/Performance Bank 1 Sensor 2 (Signal Bias Level Out of Range)
Jaguar / Land Rover - Fault P20EE -00 Selective Catalyst Reduction NOx Catalyst Efficiency Below Threshold (Bank 1)
Jaguar / Land Rover - Fault P20EE -04 Selective Catalyst Reduction NOx Catalyst Efficiency Below Threshold (System Internal Failure)
Jaguar / Land Rover - Fault P20EE -92 Selective Catalyst Reduction NOx Catalyst Efficiency Below Threshold (Performance or Incorrect Operation)
Jaguar / Land Rover - Fault P20EE -96 Selective Catalyst Reduction NOx Catalyst Efficiency Below Threshold (Component Internal Failure)