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Discussion Starter #1
Had my cel scanned at Advance Auto. Code= U0074 I believe it is either Ambient Air Temp Sensor or maybe a VCT solenoid. Anyone have this code? I just deleted my DEF with GDE. Do we even have VCT? Hemis do, but Ecodiesel?
 

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It came back about a month ago after driving thru a lot of water, not very deep, but a very rainy day with lots of puddles. Took to dealer, finally. Dealer says it's the rotary shifter. I believe it was water in one of the wiring plugs under the truck. I already had to drain water out of the biggest one and packed with dielectric grease, will do all of the rest when I do my 70,000 mile oil change. CEL went out both times, thinking it's not the shifter, fingers crossed. Still love this Ram EcoDiesel!
 
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