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I hope there is someone out there as this has been driving me crazy for over a year First I will try to describe what is happening First thing in the morning I can drive for around 20mins or until the temperature gauge gets to just above 1/3 then a little shudder and straight into limp mode , turn it off and on again can drive a little further until limp mode comes back , but on very cold days and motorways it may never happen. The engine light is on a lot of the time but has gone off again normally when its very cold , if I pull away hard it will usually go straight into limp mode regardless off engine temperature These events have never changed with every repair i have done. This is what i have done to try and cure it in order over the last year Fluid change ATF+4 Solenoid pack cleaned filter change and gasket New 95amp battery Fluid change and new filter ATF+4 New Transmission radiator Earth bonded Gearbox New Transmission brain New input and output speed sensors Then New complete Transmission box, and Torque converter Fluid change ATF+4 New Cam shaft sensor New Glow plugs New EGR valve New EGR solenoid I have checked as much as possible wiring looms for continuity and breaks And one final issue that may or may not be connected is the interior heater never really gets that hot When i retrieve error codes i get 0403 0100 0110 0380 0340 and in the last few weeks now have 0520 0480 0645 Please help !!!!