Engine Management Light On

[Deon]

I have the 16 HDI and a few weeks ago the engine management light came on so i had it checked which came up as the EGR fault. Replaced the EGR with new part and cleared the fault. Drove well for a few days then the light came on a again. The fault this time was the high pressure fuel switch on the fuel rack. Changed it with new part and last night going home the light came on again. Will get it checked later today to see what the fault is this time but was wondering if anyone might have some ideas. Spoke to someone who told me he had the same thing with continuous fault showing egr which turned out to be the air flow meter as this is apparently on the same circuit.