Oops, sorry. I was thinking p0622 universal code, p1622 is manuf specific, I'm clueless. Left bank sensor 1, since it won't cost anything, unplug it if it's easy to reach and disconnect the battery, 5 min reconnect, the mother ship may recalibrate the sensor values on it's own depending on make and year? If it goes out and stays out, go buy a lottery ticket.
