Adblue issues, it can't be right.

[Reltub]

I've had a truck since new and it went into the dealer twice under warranty for adblue problems in the first two years. (superseded parts were fitted both times) All well for a while then we have spent over £5000 with various visits to the dealer on the adblue system and it is still going into limp mode. This is over roughly a twelve month period.

I'm not shocked that there are a lot of company's offering to fix this "illegally" when I have been pulling my hair out for so long.

There is a lot of press saying operators are using these company's just to save on adblue and that they do not care about the environment which may be the case with some. I just want the truck on the road not parked in dealerships yard.

Where is the press about the dealers who cannot fix these systems and the manufacturers who can not design a reliable system?

Rant over. Anyone had similar?

[Reltub]

Thanks for the reply’s. DVSA are right to clamp down on it but I think the manufacturers should take responsibility for inferior systems that they may have been forced to rush design/fit to trucks. If they are getting better then that tells me the early systems are not fit for purpose.

We have three trucks less than four years old and they have all had warranty work done, all adblue related. £5000 to fit parts that may have not been needed is hard to swallow and we still need to keep spending, what else can you do?

Maybe long term changing supplier is the only thing to do.

There seems to be a lot of chat regarding contamination, surely the systems should self protect somehow. Our older trucks have filters, but the new ones don’t. Maybe contamination is just an easy way to pass the buck.

[Reltub]

Another £500 on a Nox sensor, fingers crossed. The engineer said if it’s not that then he would fit a cat at £2500. That would be £8000 total! Seems crazy to me. Also it’s possible the the adblue is the problem. If this was the case would not all our trucks have issues all the time?

[Reltub]

Jumpingjackflash said:

Hello

I have an Optare solo with the Mercedes M904 engine. I have adblue problems. The light has been on for three months but the vehicle has not de-rated. I am getting the Doser pump reconditioned. However is it true I need to take it back to dealer for a special code to reset emissions light?

If our light comes on it does need plugging in to reset/clear it once it has been repaired.

I'm sure there is only adblue in the tank. When we have drained it, it looks fresh and clear. Our trucks return to site every day and we only use an IBC with a nozzle to fill the tanks.

We have had two dealers and two independents look at this truck and they all seem to say the same thing. Maybe this is the only way, fitting parts and praying. Because the diagnostics only tell you that the emissions are not right and many different parts can cause this, we can only follow this route.

It would be good if you could remove parts and fully test them rather than just replacing them.

[Reltub]

The light and de-rate came back on yesterday, great. So not the Nox sensor. I’m waiting for a local guy to plug in and check the codes before fitting a cat.

In the press today another company boss lost repute and was banned from holding an O licence because of emulators. It also said one in twelve trucks pulled over had emulators fitted.

I’ve looked online for people or equipment for testing all the adblue parts but can’t find anything. If you could test the pump, injector and sensors then that would save wasting money on parts that are not needed. If one in twelve is correct then there could be a massive market for repairers to have such equipment, assuming they are fitted due to faults.

It would also help reduce the downtime we have experienced. At least five times we have had-
Limp mode
Drop at dealer, two men for two hours
Sits in dealer for four days+
Fitted part (starting with the cheapest) and cleared fault
Pick up, two men two hours
One week later, Limp mode and repeat.

I think the only reason no such service exists is because the people repairing are not paying. Maybe!

[Reltub]

StevenB said:

Maybe these chaps could help with checking / refurb. ...

https://www.allianceelectronics.co.uk/3/2/site-sea...

Thanks for that link. Next time a truck starts to fault maybe we should take all the parts they can do and send the lot for testing. I wonder if they would test for a fee rather than just refurbing.

[Reltub]

I’ve fitted a cat over ten days ago and the light has stayed off for the longest time since the problem started. The cat was 2k in the end and Renault have since had a 50% off cats offer so theirs is around 2k also. £7500 in now and that is with us fitting the Nox sensor, injector and the cat. Hopefully we get some work done now. After at least four Renault trained techs looked at this it seems the only way to solve it was to fit parts starting with the cheapest and pray.