Got a CEL this morning with code P1167. Appears the front O2 sensor (A/F sensor ratio as Honda calls it) is bad. Car has a rough idle and some upper engine chatter but otherwise pulls hard and strong. Did some research and the Denso 234-9014 is a direct replacement for an otherwise exorbitantly expensive part from Honda for my SULEV engine.

The sensor looks pretty easy to get to. Do I have to use a special O2 sensor socket or can a 22 mm open ended wrench do the job? Thanks!

 

It may require removal of the exhaust heat shield to access w/ an open end. You should be able to determine by inspection whether hex pattern is above the heat shield. If not, heat shield will have to be removed or O2 socket tool necessary. Special sockets are available for loan at some parts stores.

good luck

 

You will likely break the bolts on the heat shield if you try and remove them to use a wrench. Just is an O2 socket and you will be fine. Run the car to get the engine hot and the almost always break free with no issues.