CEL on then off?

[MasterofDisaster]

CEL lit this morning when it was really cold. Drove about 20 miles, scanned the code, and it came back P0153, bank 2 sensor 1 show response. Thought I'd order another 02 sensor, but when I went out 20min later, the CEL was off.

Does this happen much? Why would the CEL turn off?

FWIW, the mileage is typical. The car is running fine with plenty of power and no stumbling. I don't hear any exhaust leak.

 

[skwerl]

Moisture in a connection froze and interfered with conductivity. Once it warmed up it was fine. Prolly just a loose connection somewhere.

 

[MasterofDisaster]

Makes sense. Thanks!

 

[86GT351]

unplug and make sure it is nice and dry. reconnect and see what happens