Hi rdcars

I was wondering where you found the Topix guide? Do you have a link?

VMT

Red

I recently had the dreaded Ad Blue quality warning and the count down running on my 2015 XE. This was not long after I had topped up the Ad Blue.
After doing some research on here I couldnt find any information for a fix on the the Ad Blue system, other than take the car to the dealer for a potentialy expensive repair and reset.

What I did find on here was a good Topix guide on how to drain the Ad Blue tank which was easier than I thought. It just involves removing the LHR wheel and wheel arch liner, and draining the system through the drain tube, before refilling with fresh Ad Blue.

While I had the car on axle stands I also removed the Ad Blue injector, (very quick job and only requires undoing one 4mm allen bolt) and was suprised how much crystilisation was on the injector and the exhaust hole was partially blocked with crystalised Ad Blue.

The crystalisation on the injector was removed using a spray bottle containing hot water, which disolved the crystalisation very quickly.
To unblock the hole on the exhaust, I simply used a screw to loosed up the Adblue while holding a hoover next to the exhaust hole to stop any Adblue residue falling into the exhaust.
Once reassembled the Adblue quality warning was still on, but at some point during the drive to work of about 25 miles the next day the Ad Blue quality warning went off.

This was over a month ago and 900 miles covered since, without the Ad Blue warning re-appearing.
Based on my experience, if you have this fault I would recommend checking the Ad Blue injector first - It takes longer to jack up the car and fit axle stands than it does to do the job.

Hope this helps someone else with a similar problem

 

I had the warning come up 2 weeks ago. I was expecting fluid low as it was about that time. I normally top up my ad blue from local garage forecourt 5 litre cans. Instead the warning of poor quality etc. I immediately put 5 litres in, the warning stayed.

I searched the net, saw that a garage had the similar fault, said cleaned injector, re flashed engine management and it worked. I called them, they said it can be several things. Booked an appointment. That garage was miles away, didn't fancy using up my precious 512 but heyho.

In the meantime took it around to my local Jaguar handyman, he has limited software reader and plugged in. Few engine faults, but generic reader so he reset them. Fault stayed. He called a better specialist and off I went. 30 mins later, proper fault reader on my car and all reset. Topped up with his 'quality' ad blue but probably not to full. Fault remained.

Drove home 18 miles. Fault cleared as I drove home

So perhaps quality. Perhaps with Covid driving only locally with no blast on the highway the ad blue jet clogged. Perhaps the tank was low. Who knows.

So I advise, top your ad blue up to full. Small payment if it subsequently needs draining. Take to friendly software reader that will read and reset all codes. Take it for a blast down the motorway as only a jaguar can Then and only then, let Jaguar get their hands on it. Having said that, my jag man did say there was a recall out for this fault. Not read into that yet as garages are closed for Covid.

One last thing. As a key worker in the UK, Marshalls have a hotline for appointments in Oxford, Cambridge and Lincoln where their techs will have a look to keep the country rolling. Well done Marshalls!!

 

I'm not sure there is such a thing as better quality Adblue. Fresher certainly, but it all has to conform to the same standard. When I had my diesel, I made sure to only fill the tank to 80%, and if I ever had an issue I would have popped of the injector as a first step in diagnosis. Had the car 14 months (13k miles) with no probs, and part ex'd for my current Xe.

 

So I advise, top your ad blue up to full.

I'm afraid that is very bad advice and I base that statement on members experience on this forum over the past few years.
The best advice is ON NO ACCOUNT fIll the tank right up.

I'm not sure there is such a thing as better quality Adblue. Fresher certainly, but it all has to conform to the same standard. When I had my diesel, I made sure to only fill the tank to 80%, and if I ever had an issue I would have popped of the injector as a first step in diagnosis. Had the car 14 months (13k miles) with no probs, and part ex'd for my current Xe.

It does seem pretty random as far as problems are concerned but I totally agree with Robs comments. Always use fresh Adblue and never fill the tank.

 

[/quote]

It does seem pretty random as far as problems are concerned but I totally agree with Robs comments. Always use fresh Adblue and never fill the tank.
[/quote]

And if you do have an 'adblue quality' warning, clean the injector before doing anything else... particularly if you have one of the higher dosage models

 

Well I am 5 years into my car now and used my methods already mentioned several times and never had any problems whatsoever. Looking after the bulk supply on one tub finished last year and now on my second 10 litre tub using my filling methods must have some effect.

 

My car came up with a warning saying about 1000 miles left. I topped it up with a 4 litre bottle of ad blue and it cleared straight away. I put another 4 litre is the next day for good measure. I know it will take about 12 litres but I would rather under fill it that overfill it. It seems there are quite a few glitches with the ad blue messages.

 

Hi all had the incorrect quality issue yesterday with the mileage count down.

I havent driven much recently maybe the odd trip to the supermarket but no where else

Ive extended warranty and Jag assit came out and helped.

Vehicle's Mileage

40,111

How we assisted

Incorrect diesel exhaust fluid quality detected. NOx exceedance P2BA9-00/92. Cleared diagnostic trouble codes stored. Checked fluid level-5.6litres. Reset selective catalyst reduction quality monitor. Shutdown for 10 minutes. powertrain control module already at latest level. Requires smoke test,injector dosing test and fluid test. Customer booking into Farnell JLR Leeds.

Anyone else had this and know if its covered or if its worth going to jag?

 

There's a whole bunch of threads on that very subject!

If you go down the official Jaguar warranty route, be very clear to the dealer that you expect them to find and repair the issue. Do not let them get away with saying that the wrong DEF has been put in, and charging you a fortune as some dealers have been known to do.

If it were me, I'd get under the car and inspect the DEF injector. The only tool you'll need once lifted would be a 4mm allen key.

 

Just merged this new topic with the existing one.

 

[quo[/quote]Thanks guys. How can i check my injector and is it easy to do?

 

There's a whole bunch of threads on that very subject!

If you go down the official Jaguar warranty route, be very clear to the dealer that you expect them to find and repair the issue. Do not let them get away with saying that the wrong DEF has been put in, and charging you a fortune as some dealers have been known to do.

If it were me, I'd get under the car and inspect the DEF injector. The only tool you'll need once lifted would be a 4mm allen key.

Thanks so much. Is this easy to do or a difficult task? Any guidance to check / clean would be helpful

 

rdcars on page 5 of this tread gives a basic write-up. Have a look on Youtube, there's a VW video on essentially the same system.

If you do get the injector off can you take a couple of pics to post up. I'd have done that, but I sold my diesel.

 

Had the same dreaded issue come up on mine. 440 miles and counting for me. I had the low level notification pop up so I put 5L worth in almost straight away, a week and 600 miles later I now have a quality issue.

I've tried the injector clean but no joy for me. It's simple enough to do, Jack up the car at the passenger side rear, take wheel and arch cover off and it's easy to see the pipe to drain tank.

Replace all of that and I found it easier to axle stand the front and go under that way. The injector is pretty much just inside the furthest part of the splash guard for the engine (you don't need to take the guard off). If you can't see it then trace the exhaust pipe all the way along from the rear of the car, go past the NOX sensor, past the catalytic converter and you will see it shortly after. It's a lot smaller than I thought it would be. There is a YouTube video which we have exactly the same one as which will help a lot.

Sadly mine had no crystallisation, so I'm going to plug it into a fault reader and see if I can clear it. I've got it booked in at Jaguar but considering how many people suffer with this I won't be happy if they expect me to pay for a software update.

 

I had the warning on as wel, drained flushed and refilled the tank.
Removed the ad blue injector (I did not took the feeder hose off) and cleaned the injector with hot water. And cleaned the exhaust intake with a vacuum cleaner and a screwdriver.
I drove the car for 50 km on the highway but the message is stil there.
Tomorrow to the garage a have them reset the fault, I hope that's it.

See attachment for the dirty intake and injector.

 

Today to the garage, http://www.hartendorp.nl/merken/ They tried to reset several function's in the computer but the measage stil there and counting down. They were gone contact Jaguar to ask for assistance and will call later on the day.
I drove away and noticed that the message has changed from ad blue quality to ad blue injector quantity. And yes!!!!!!! after 20 minutes on the highway the message is gone!!!!!!

 

Great news but keep us posted. That exhaust looked choked, I'm wondering if a particular journey profile causes that?

 

That's a great guide Bamm,

Luckily after I had done as suggested with the injector clean (not that I had much crystallisation) I put a diagnosis machine on it and cleared an error out (it didn't say which one). Was only a cheap £20 one but seemed to clear something off. The error then changed to a dosing error rather than quality. I gave it a decent run for about 30 miles and towards the end of that run the warning had vanished.

Cancelled my JLR booking after a few days and it hasn't returned since. Keeping an eye on it!

 

It's a strange complain. It looks like there are more complain's but they are in some sort of order.
Main complain is;

#1 Quality AD Blue
But it seems that there is no sensor that measures the quality, it looks like the NOX sensor is measuring something and relates it to the quality of the AB Blue. (NOX values after injection)

#2 AD Blue injector quantity
This one comes up when you clear the quality Fault #1. The quality fault has a higher priority so you have to clear that one first.
I think this one comes up due to temp droppings, but why after the quality fault...... I think this is the major problem.

And then above all why do they come on after a refill with overfill occurrence? There is an ultrasonic level sensor installed and the waves need to bounce back from the top level of the fluid and this is not happening when overfilled, the the waves bounce from the tank.

If there is somebody who has more information please share so we can tackle this complain.

There is also a lot of information about this complain on some Land Rover forums (they use the same engine set up)

Oh and don't start poking in the injector nozzle use hot water to clean it

 

I recently had the dreaded Ad Blue quality warning and the count down running on my 2015 XE. This was not long after I had topped up the Ad Blue.
After doing some research on here I couldnt find any information for a fix on the the Ad Blue system, other than take the car to the dealer for a potentialy expensive repair and reset.

What I did find on here was a good Topix guide on how to drain the Ad Blue tank which was easier than I thought. It just involves removing the LHR wheel and wheel arch liner, and draining the system through the drain tube, before refilling with fresh Ad Blue.

While I had the car on axle stands I also removed the Ad Blue injector, (very quick job and only requires undoing one 4mm allen bolt) and was suprised how much crystilisation was on the injector and the exhaust hole was partially blocked with crystalised Ad Blue.

The crystalisation on the injector was removed using a spray bottle containing hot water, which disolved the crystalisation very quickly.
To unblock the hole on the exhaust, I simply used a screw to loosed up the Adblue while holding a hoover next to the exhaust hole to stop any Adblue residue falling into the exhaust.
Once reassembled the Adblue quality warning was still on, but at some point during the drive to work of about 25 miles the next day the Ad Blue quality warning went off.

This was over a month ago and 900 miles covered since, without the Ad Blue warning re-appearing.
Based on my experience, if you have this fault I would recommend checking the Ad Blue injector first - It takes longer to jack up the car and fit axle stands than it does to do the job.

Hope this helps someone else with a similar problem

Driving home yesterday in my 2016 XE R Sport 180 manual - "Incorrect DEF quality detected" then today the mileage countdown began. I read through these forums and many people with the same problem.

I wouldn't be confident enough to try the fix quoted above myself as I've zero mechanical experience. Took the car to local garage & they plugged in the computer, tried clearing faults etc but no joy - it's booked in with them on Friday to have a more in depth look and hopefully I can avoid a trip to a Jaguar dealer.

At the garage when going through the faults the warning message on the dash changed to "DEF dosing malfunction" - anyone have any experience with this particular warning message?

 

Same as my measage/problem.
Clean the ad blue injector and the exhaust Ad blue inlet and have a highway run for 20-30 min then the message wil disappear .

 

I recently had the dreaded Ad Blue quality warning and the count down running on my 2015 XE. This was not long after I had topped up the Ad Blue.
After doing some research on here I couldnt find any information for a fix on the the Ad Blue system, other than take the car to the dealer for a potentialy expensive repair and reset.

What I did find on here was a good Topix guide on how to drain the Ad Blue tank which was easier than I thought. It just involves removing the LHR wheel and wheel arch liner, and draining the system through the drain tube, before refilling with fresh Ad Blue.

While I had the car on axle stands I also removed the Ad Blue injector, (very quick job and only requires undoing one 4mm allen bolt) and was suprised how much crystilisation was on the injector and the exhaust hole was partially blocked with crystalised Ad Blue.

The crystalisation on the injector was removed using a spray bottle containing hot water, which disolved the crystalisation very quickly.
To unblock the hole on the exhaust, I simply used a screw to loosed up the Adblue while holding a hoover next to the exhaust hole to stop any Adblue residue falling into the exhaust.
Once reassembled the Adblue quality warning was still on, but at some point during the drive to work of about 25 miles the next day the Ad Blue quality warning went off.

This was over a month ago and 900 miles covered since, without the Ad Blue warning re-appearing.
Based on my experience, if you have this fault I would recommend checking the Ad Blue injector first - It takes longer to jack up the car and fit axle stands than it does to do the job.

Hope this helps someone else with a similar problem

Driving home yesterday in my 2016 XE R Sport 180 manual - "Incorrect DEF quality detected" then today the mileage countdown began. I read through these forums and many people with the same problem.

I wouldn't be confident enough to try the fix quoted above myself as I've zero mechanical experience. Took the car to local garage & they plugged in the computer, tried clearing faults etc but no joy - it's booked in with them on Friday to have a more in depth look and hopefully I can avoid a trip to a Jaguar dealer.

At the garage when going through the faults the warning message on the dash changed to "DEF dosing malfunction" - anyone have any experience with this particular warning message?

So just wanted to get opinion of anyone who has encountered this before.
Had the car today at my Jaguar dealer (Charles Hurst, Belfast). They diagnosed the problem as; the Adblue tank had been overfilled, the car had initiated a 'fault' state and therefore started the mileage countdown. I was charged £288 to have the tank drained, refilled and then tested & have fault cleared.
I advised the dealer today that I never got any initial prompt to fill the tank or any other messages regarding the DEF until I got the "Incorrect DEF quality detected" message.
Would I have a case for contacting Jaguar Complaints as this surely isn't an error on my part?

 

If the DEF tank was overfilled, who filled it and why?

 

If the DEF tank was overfilled, who filled it and why?

Thanks for reply.

To give some context I bought the car in October last year and have drove roughly 3.5k miles. As I said before when I got the "Incorrect DEF quality detected" message I hadn't got any prompts or warnings regarding DEF before. I hadn't even thought about Adblue at all - this was my first ever warning message on the car. After getting this message and the countdown came on I decided, having consulted this forum to put 5 litres into the Adblue tank - to see if this would help remedy the warning as it could take some time to register etc. Considering the tank is meant to have a 16L capacity; in my opinion this could not have 'overfilled' the tank.

Would I have grounds for complaints?

 

The problem is that dosing seems to be a bit variable, some people report 1000 miles per litre, others 500. Who's to say the tank wasn't filled up by the supplying dealer?

Does your car have the ability to check tank level - service menu with engine off?