Cayenne V8 Diesel AdBlue Fault

[JBCayenne]

Got a 2016 Cayenne 4.2 Diesel which I purchased from new, and it's now been back to the garage three times (twice in the first six months) with the dash displaying AdBlue Fault, car will not start in 650 miles.

I've searched high and low to see if anyone else has seen this issue, but been unable to find anyone with a similar issue.

Porsche connect the car to their computer and the fault clears itself until next time.

I have been trying to back the car, but Porsche don't seem to accept faulty cars back, they just keep on claiming it's fixed !

Whilst on the story of AdBlue, what mileage are you guys getting on a tank ? I haven't managed to get over 5k yet, whilst on the Macan, it was consistently over 12k. This is a lot of visits to Porsche for AdBlue !

Thanks,

[JBCayenne]

It's my understanding the Cayenne uses a non standard connector for re-filling the Ad-Blue. That aside, it's quite fortunate I have been using Porsche Ad-Blue as when the fault first appeared, the dealership the car went into blamed the quality of the Ad-Blue, and would only acknowledge that the Ad-Blue was of correct quality upon seeing the actual receipt from the dealership used to refill it !

[JBCayenne]

Fokker said:

I've had same issue. Been back in twice for this, 650 miles and cr wont start etc with a full tank of Adblue. They say they've now fixed the issue and that it was a sensor.

That's interesting, how many miles had you done before the fault, and how many since it was fixed ?

[JBCayenne]

Dozerman said:

We have had the very same problem which has been going on for a month. Porsche East London removed the engine, cleaned the Adblue ports, refitted the engine, tested the vehicle for 20 miles, we picked the vehicle up did another 25 miles and the adblue fault light came on again. Porsche! wake up and smell the coffee, you have a problem.

Don’t know how old your car is, but I eventually went to the ombudsman as Porsche kept on telling me it wasn’t faulty. To this day I can’t understand their lack of customer service. Ended up returning the car and not buying another Porsche.