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Manifold heater light came on with beeping loss of power came back after couple hous on trip lost again came back checked for coads when got home no coads any ideas thanks 2007 5.9
I would suggest you check all battery and grounds to the engine from the batteries and frame. Check the TIPM (fuse box) to see if the positive battery wiring is tight where the 10mm nut ties them into the TIPM. Does this happen, loss of power and dash lights, when you hit a bump? What are the symptoms that cause this if you notice any? I have the identical truck other than mine is 4wd.
Leak detection DTC activated. There are 1 or 2 DTC's stored., P1222 or P1223,
Short answer, the ECU thinks there is a leak in the high pressure system. Could be an actual parts failure or a false positive from an electrical glitch.