hello all, hoping to gain some advice.
Just had my Doblo Cargo 1.9 jtd go through the MOT. When I got it back, the engine management light came on. Put the code reader on, it came up as PO401. exaust gas recirculation insufficient. The engine idles happily at around 800 rpm, if you give it a bootful of throttle no black smoke. It drives as it should, turbo spools up and accelerates well, and it trundles about quite happily. any advice welcome, thanks Gary.