The strange thing is that this occurs only on temperatures above 0 degrees Celsius. On temperatures below zero the engine runs smoothly. Hey Adam, months back when I got my mk6.5 fiesta zetec s 1.6 TDCi it was left on the driveway for 2 months and was driven in and out the garage until my insurance renewal came up for my previous car. At one point the engine light came on and the code was to do with the Egr. Try deleting the code with the diagnostic tool as I deleted the code (2008 Ford Focus 1.6 TDCI) I've noticed (using forscan) that the dpf is regenerating approx every 100 miles. This seems very excessive especially considering the differential dpf pressure is well within the acceptable range when these regens are kicking off. gurcayy. The ecu is attached to the inner side of the front bumper ( passenger side for RHD or driver side for LHD). You will need to remove the front tyre and arch cover. When you are done with this, you will see a white plastic box. The ecu is inside of that box. I've had the wheel off passenger side and the plastics but couldn't find it I have this 1.6 TDCI EDC16C34 that come to me from other garage with a strange fuel pressure issue. on the car they replaced: fuel filter FP regulator FP sensor I also replaced FP sensor wiring just rule out a possible wiring issue. doing some tests I found that on cold engine the FP vs rpm is ok but as soon as the engine warm up the FP is all over the place. It is a little early (55 reg) for the 2006 cluster soldering problem, but still possible. It needs more detailed info about what lights come on and when, whether the immobiliser LED is flashing, and what code number it is flashing, and if Forscan can still communicate with the car at all. hello again! After the write, sucefully!! , and erased all DTC's, still have the same errors (with ECU connected to EGR) and the car still in limp mode!: P1412 - EGR Valve Frozen. P0490 - Exhaust Gas Recirculation Control Circuit High. P042F - EGR Control Stuck Closed. Ford Model: 1.8 TDCI Mk2 Focus Ford Year: 2006 as soon as the problem happens. P.s I do not believe a proper ecu test has been done so may consider paying for E0o4o.