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I have a 2009 Mercedes Benz S 550 (221.171) V8-5.5L (273.961) that is stuck in limp mode. I have checked all the connections and changed the battery, but it is still stuck in limp mode. I have a Modis ultra scanner and keep getting these codes, C01F, 5822, 5831, 1936, 1991, and of course a 1405. I cannot find these codes anywhere. There is no communication with the TCM. I have not pinned out the ground wires yet, because I was hoping to find a connection between these codes before going all willy-nilly on a wiring harness and back pin all the plugs. Can someone help a brother out ? Thank you
 
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