Mercedes C-Class W205 Adblue Issue

[moibbi]

Hello, my Mercedes-Benz C-Class has an engine warning light & the dash says “Engine Start not possible in 500 miles” after investigating I have found I have an error code of P204814 “AdBlue® metering valve 1 (cylinder bank 1) has a short circuit to ground There is a short circuit to ground or an open circuit” how can I remove this entirely? I’ve filled 10 litres of AdBlue and the car won’t let me view how much AdBlue is inside the car currently

 

[pcthrillrider]

watch this video, it deletes the adblue system from the car never have to fill it up again

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[MrGreedy]

There have been a couple of threads on here where, I think, rubbing of a loose wire that goes to the ad blue level sensor has rubbed through the insulation and this has caused a short.
This sounds a lot like the error you are experiencing. It might be worth a search on the forum for this, as it could be a quick and cheap fix if this is the issue?

(if it was the issue, I'd be correctly splicing in a new section of wire where the damage has occured, and making sure the wire can't bounce around anymore, rather than a dealer 'replace all wire with new at high cost' option)