I have just recently got my hands on a 2000 ram 2500 with 24v and 5 speed tranny. I drove the truck for a few days and it threw code p0122 and p0234, had diagnostics ran and replaced the apps. Drove for 1 day with no engine light and then it cam back on with the same codes. Got them cleared, checked voltage on apps and got it to .51 dc. Drove truck again and it done good for a few days then the light came back on with p0122, p0500, and p1693. I’ve checked voltage again on apps and it was .39 and couldn’t get it to set around .51, I’ve checked all wiring and grounds and it all looks good. truck is completely stock as far as I’m concerned beside a cold air intake. Please help, it’s getting frustrating.