I've got a 97 dodge ram 1500 with the 5.2 and just checked my codes, I have codes p0108 (map sensor voltage too high), p0123 (throttle position sensor voltage too high, and p505 (idle air control motor circs). Any idea what these are the result of? All of the sensors are less than 2 years old

 

No idea what specific issue would cause these codes, but when I see multiple voltage and/or circuits codes I suspect wiring. The two sensors and the IAC are on top of the engine so tracing the wiring should be somewhat easy.

 

did the truck recently turn on a CEL and have issues or are you just plugging in and check codes for no reason? If so they could be historic and just need cleared from when you replaced them.

Next would be to look in the service manual and get the wiring schematic and check the sensor supply voltage at each sensor.