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Update: went to AutoZone today and had them check the codes via the OBD II....nothing....not one code has been thrown. When I first had them hook up the reader, it wouldn't connect at all....like the OBD connector was dead. I checked the fuse box, and sure enough, that 20amp fuse was blown. Replaced it, then their reader connected.........yet, no codes at all. If oil cooler and/or EGR cooler were not functioning properly, and I had an abnormal rise in either oil temp or coolant temp.....could this cause the PCM to degrade power, yet produce no codes?
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