heddfan Posted March 15, 2012 Share Posted March 15, 2012 Anyone help me please.Took my car for a MOT today when I left the test centre the engine management light has come on. Was ok before the test any ideas please. Thanks for looking. Quote Link to comment Share on other sites More sharing options...
turbine Posted March 15, 2012 Share Posted March 15, 2012 You dont say what engine. If its the TDCI they will do a high rev test to measure the emissions for the MOT. If you dont do high rev work often, that extra flow could move some crud along the fuel pipes and block the fuel filter. There is no sensor to test for filter blockage or LP faults. The first pressure sensor is just before the injectors and that's the one that will put on the fault light if the injector pressure is below requirement due a filter block. You should really get the codes read, as fuel is not the only thing that lights the dash. If it is a fuel pressure code the filter is your obvious first port of call. Quote Link to comment Share on other sites More sharing options...
heddfan Posted March 15, 2012 Author Share Posted March 15, 2012 Thanks mark sorry my car is a 2005 2.5 ghia x petrol does that make it a little simpler. Quote Link to comment Share on other sites More sharing options...
ppeter7 Posted May 9, 2012 Share Posted May 9, 2012 might be egr valve but worth checking Quote Link to comment Share on other sites More sharing options...
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