This fault code after the MOT, it passed emisions,wasn't on before , never has came on.

Source of the problem?

Any ideas to solve ?

No EML light either, could they have knocked something of unplugged something?

Must be a sensor as its very temperamental , it's not on the ECU log faults now, ok check the sensors on the carbon canister

Have you cleared the code?

 

Has it returned since, it could be a one off or have been present for a while.

Didn't bother clearing coz was going to check all wireing, but on way to garage thought I'd check, gone,hasn't been up since.