Service ad blue system …engine won’t restart in 500 miles

[Bobchelsea]

Hi,

2021 plate 2ltr Insignia sports keeps giving above shown error code. I know it’s a sensor fault as just MOT’d and had 0 emissions reading (after reseting EML and topping up with cat cleaner)…question is …which sensor is failing…?

any help mu+h appreciated….cheers!

[Vauxhall Owners Club]

Sounds like the level sensor is sticking which happens when the adblue chrystalises over time.
It would need flushing out and refilling at the least otherwise it could also be the sensor that needs replacing as well.