Mechanics

CADILLAC DEVILLE SENSOR PROBLEM

1997 Cadillac Deville • 208,019 miles

Where is the location of the po135 heated oxygen sensor ho2s heater circuit bank1 sensor1(rear bank) and what does it control car just smoking and missing after po300 pop up can you help me thank you
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February 2, 2013.



No connection to the issue. It is a control code for the heater in the o2 sensor only. Most likely a bad sensor and would have to be replaced.

It is on the rear exhaust manifold

Roy