Re: Error Code P1406
There are about 15 items on the troubleshooting list for the shift interlock system—too many to list here. You might have to pony up for a mitchell-on-demand/alldata subscription. On the other electrical problem, I wouldn't be so quick to condemn the body control module. First check out the transmission range selector TRS. These are a known problem with Fords and can cause all kinds of strange electrical behaviors. Remove the connector and check for corrosion. If you find it, I'll bet your problems start there. If not, I'd start checking for poor grounds.