When I swapped from my 1MB (1024K) 125815656 to 512K 12200411 I got the following DTCs
P0134 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0154 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
It turns out some of the o2 sensors were changed around between the 2 PCMs
HO2S Heater Low Control Bank 1 sensor 1
Black C2-72 > C2-80
HO2S Heater Low control Bank 1 Sensor 2
Brown C2-52 > C2-72
HO2S Heater Low control Bank 2 Sensor 1
Lt Green C2-74 > C2-80
http://i172.photobucket.com/albums/w...b/DSC02533.jpg