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204,205,206,301,2146 codes

652 9
all these codes have come up on my 06 2500 mega 5.9.
cleared codes and runs fine, then boom, right back. Hardly enough power to move truck. Wiring, ECM, other?? Any ideas??
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204-cylinder #4 205-cylinder #5 206-cylinder #6 control circuit

301-cylinder #1 misfire

2146-bank 1 (cylinder 1-3) shorted high or low

do you have warrenty?
 

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sounds to me like the wiring harness that is under the valve cover is bad, kinda hard for me to tell, its hard saying what it could be.
 

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what do you have done to your truck? Do you have an edge or anything that plugs into the injector harness?
 

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never thought about have an edge, those like to throw codes
 
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