Just wanted to let you know that Berryman 12 came through again.

Had MIL for check engine for about 4 fuel tanks. Pulled the code at Autozone - P042. Added the B12 on the 5th fuel tank and drove until nearly empty. Now MIL is gone.

This is the second time within last 50,000 miles that I got rid of the P042 with the B12. So here is a tribute to Dr. Berryman and his/her famous formula - B12.