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engine managment light on ?

egr valve was faulty by way of a diagnostics machine. ive replaced the valve but the managment is still on and still reads the same fault
steve, March 2009
GM cars have the same problem but if you have replaced the egr vavle and code resets you will need to check the egr passage for blockage ......is it a electronic egr or vacum operated

bg, March 2009
You'll need to plug it in again and flash the ecu to remove all error codes this should clear the light

CPF, March 2009