Off the top of my head I cannot remember what a 162 is do you have a fault sheet that says what it is?
Is the 162 fatal?
From what the tach told me, The 162 fault is related to a GL, FG, or HWM I/O failure. Every time we get this fault we find the car parked on one of the floors with the doors open. Yet when the tech checks all the relayting relays and I/O's they all check out good.