C3 1.6 diesel. Antipollution warning light went on , with apparent loss of power. However, after turning off ignition, car went well, thoughw warning light still on. What might the warninglight mean? What might the problem be?

Mavis Davis, December 2010

if you do a lot of town driving this can lead to unburnt carbon deposits in the exhaust system,give the motor a good run up the motorway with high revs to get the exhaust really hot to burn off these deposits in the exhaust system

cdc, December 2010

the exhaust fumes run through a catalytic converter to take out pollution to the air also a lambda sensor to control fuel flow.the e.c.u will go on limp home mode,ie loss of full power, it needs code reading by diagnostic to find the fault ,then it needs repairing, replacement p.s dont 4 get 2 check pollen filter tho

don, December 2010

the pollen filter requires changing

don, December 2010