Eolys P1435 error when there is no tank

[CrazeUK]

Hi All.

I have a strange one.
I have a 2014 C4GP E-HDI 115 A/D Exclusive + ETG.

I was running an Autel MK808BT scanner on it (with latest updates) as i had a series of errors and recently had a Injector replaced.
It turns out almost all of the 9 or so errors where caused by a burnt headlamp H7.

Whilst running the scan, i was checking individual components, and suddenly popped up with a Eolys P1435 error.
Multiplexed additive pump. -- CAN fault or additive pump fault.

I then ran a test on the pump, and heard a gentle thumping noise.
As far as i was aware, i didnt have Eolys on the vehicle as i still pay ULEZ charge in London.

I called Citroen dealership today, and they confirmed it didnt have it.

So why the error?
Since replacing the headlamp bulb, the error along with all the other errors has now gone.

But its confused me. Does my car indeed have it?
p.s. i have screen shots from the tool showing the part number and quantities.

[RichardW]

It will have Eolys, it doesn't have AdBlue. If it's intermittent, just ignore it till it's really a problem!

[GiveMeABreak]

Confirmed you have DPF with a an Eolys additive tank. Do not get this mixed up with the SCR system that is a separate system to treat NOx that uses Adblue. They are entirely different systems with different functions.

Your vehicle is Euro 5, not Euro 6, which is why you pay the dreaded ULEZ.