Codes P0125 and P1130

Ive been having some trouble with my V6. For quite some time now it has had a miss but only when its raining or right after it rains. I replaced the plug wires and spark plugs but this did not help anything. Logically, I thought it might be the coil packs. I eventually had a code pop up P0306 which was a miss fire on cylinder 6. So I replaced the coil pack for cylinder 6. However nothing worked. Everytime it rains I still have the miss. I took it to my mechanic and he insist that its the air/fuel ration sensor. That has been replaced about 4 or 5 years ago. I only put about 22 miles on my truck a week so I don't think that is the problem. Well I got my truck back today and it popped these two codes P0125 and P1130. The truck still doesn't seem like its running like it should and I really don't want to take it to the stealership. This is driving me crazy. I took a freeze frame and this is what it read:
PID02=0125
PID03=0200 Loop is OPEN
PID04=99 LOD=59
PID05=84 WT 197 degrees F
PID06=6c
PID07=8a
PID0C=1102 RPM=2177
PID0D=3D MPH=38
PID0F=41 IAT 76 degree F

Any help that you guys can give me would be greatly appreciated. This has got me totally stumped.