Have just used the cataclean, car is driving fine no loss of power and usual performance back to normal, however have tried doing the dashboard trick and disconnecting the battery to clear the "depollution system faulty" error message on start up, but it still appears, any ideas how to clear this?

Alex, August 2015

try rev the ball,s out of the car on a run, cleared our peugeot

MY WILLALAN, August 2015

You could actually try telling us the make and model. Some cars have particular faults

X, August 2015

If the fault is not present then it may only need to go onto a good code reader to delete the fault

cdc, August 2015