It's been an interesting morning doing a bit of diagnostic work on a C4 Picasso with an AdBlue issue and only having 100 miles left before it throws in the towel.
It belongs to a near neighbour who, amongst other things, fixes broken conservatories - we are in discussion about mine
Putting Dogbox on it was initially not very rewarding until I discovered this particular Picasso likes to identify as a Space Cadet
Then we were in business
It has a P2047 00 fault which points to the AdBlue injector...
Of a bit more concern was a failure to communicate with the Urea ECU...
Apologies for the picture quality - mobile phone shots of the laptop screen rather than proper screenshots...
The 2047 fault remains as a hard fault and the car still has only 100 miles left... I was hoping a token effort at clearing faults may have sorted that but no, sadly
Reading a very good post on this issue in this very forum:
viewtopic.php?t=81358
It seems the missing ECU may be a red herring and the problem is either the injector or the wiring to it. I still need to check F4 which I believe will pop if the injector is short-circuit.
An actuator test on the injector fails but all else on the system seems OK... Both owner and I hope it's just a manky connection to the injector or a duff injector.
The urea pump whirrs nicely as expected and all other bits of the system seem functional.
Stay tuned for the next episode
