Very rough idle all of a sudden and a bunch of codes. Any ideas of first things to check? 330km

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Has your EGR/FCV been removed or blocked off by some means?

P0403 and P1140 are for the EGR Solenoid and FCV respectively. Most people get those codes when they remove those systems and do not install a tune to eliminate them from the ECU.

The P12XX codes look like they relate to the glow plugs. Have you worked on the Jeep lately in that area?

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2006 Limited CRD: Frankenlift II, Fumoto Drain Plug, DIY Stage 1 Tune, In-Tank Lift Pump

Ya my egr and fcv is gone. I just cleaned the map to see if that would help. Also a fresh tank of diesel and some 911.

Haven't done anything with glow plugs

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