Honda Repair: o2 sensors, coolant temp, o2 sensors

Question
Travis i have a 2003 honda accord 2.4L model with a check light on. i diagnos it and it gave a p0141. can you tell me how much sensors this model have and where exactly the sensor located for the p0141 reading. thanks in advance.

Answer
Kingsley, Bank 1, Sensor 2.

This code means that the heated circuit in the oxygen sensor on bank 1 decreases time needed to enter closed loop. As the O2 heater reaches operating temperature, the oxygen sensor responds by switching according to oxygen content of the exhaust surrounding it. The ECM tracks how long it takes for the oxygen sensor to begin switching. It the ECM determines (based on coolant temp) that too much time elapsed before the oxygen sensor began operating properly, it will set P0141. See also: P0135 (Bank 1, Sensor 1).