New Additive Tank / Pump fitted but unable to clear fault codes P1434 P1435 U0118

How to Program and Reset Additive tank codes correctly after replacement, Citroen DS3 in the video but same applies for many Citroens and Peugeots with the same system. Eloys / Pat fluid tank.
Check out the diagnostic machine I use - diydaly.co.uk/...
1 Ltr Pat Fluid filler Kit - ebay.us/sK0o4i
5 Ltr Pat Fluid Kit - ebay.us/YPiagQ
New Additive Tank OE Citroen / Peugeot - ebay.us/MQWJv0
part number - 1613704680
Check Euro Car parts for parts - tidd.ly/3lIO7xA
Check GSF Car Parts for parts - tidd.ly/359Cie3
The Additive tank was at fault but after replacement we were unable to clear the codes in the engine ecu, there was an option for pump programming in the engine ecu that could be carried out but still we couldn't clear the codes after.
Using the snap on diagnostic machine its turns out there is another Ecu for the Diesel Additive in which the Tank needs coding though & also level codes were stored In the same ecu and need clearing. Once programmed correctly we were able to clear the codes in the main engine ECU.
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