My 99 Accord V6 (101,000 miles) threw a p0140 trouble code which is insufficient activity from Bank 1 Sensor 2. I bought the o2 sensor and was gonna install it this afternoon but can anyone tell me where I can locate this sensor. Is it on the Cat? Will I only need a slotted o2 socket or are there any other tools I would need? How long of a job can I expect this to be?