• Looks like they replaced the Nox Sensor... "Nox Sensor - Repl Nox Sensor - Cleared Fault Codes", which would explain the £311. I had mine replaced a few months ago on my Berlingo. Seems to be a common problem.

    You'll get a adblue warning light on the rev counter and possibly a EML, if it was an adblue problem. You can't really neglect the adblue. If its run out, it will tell you and give you a countdown in miles to the engine not starting.

    You should be able to read the codes with a normal reader to get somewhat of an idea. It's just usually certain functions you can't perform without lexia/diagbox. I bought a TopDon ArtiDiag800BT to use on my Berlingo after having to wait weeks for even a diagnostics appt at Citroen. Seems to be able to do most things, recently reinitialised part of the adblue system with it which seemed to fix an intermittent warning light.

  • Thanks, really useful. I read up on adblue and it revealed the car gives a countdown timer where if it hits zero the engine will refuse to start. Will buy a small bottle & stash it in the boot storage

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