So many Euro 4 ( & 1.8 Euro 5’s ) Transit Connect owners seems to have EGR valves failing these days, with running issues & P0490, P1103, P1102 P0404 Sensor Circuit A dtc fault codes seen very often.
The 90ps, 110 & 75’s are all affected. The DTC fault codes beginning 11 are “companion” air mass faults as well, but these are often just indicative of a faulty EGR, as one of the MAF sensor’s jobs is to monitor EGR performance. Vantuner can switch of the function of a faulty or working EGR in person or by post, at about a third of the cost of a new valve, which is a pricey Ford only supplied item as it comes complete with the entire intake manifold!
Plenty of discussion about this very problem on the Ford Transit Forum ( fordtransit.org)