from left to right, the last relay on right is not required. Cold storage ckt only. The second from the left is most important. Remove it and check its female pins very carefully. Remove the others and compare them. Often, they female connections burn and wont carry current. A local electronics store can replace the relay sockets and test the board. Any discoloration in the female pins will cause those codes. Pins at the Vehicle manager can spike and cause problems. Remove all plugs from the VM and dry the sockets with electrical cleaner. Make sure all electrical components are dry...remove them and bring them in to the heat. The operator display may be shorted as well...Start with this >>>and make sure a cat is not hiding in there...:)