Boost Engine Health The Ultimate Guide to O2 Sensor Replacement

I wouldn't replace unless there is an issue. The 4 sensors are 100$ each for oem/oem adjacent. They don't do a whole lot other than send a ... It can be very awkward to work down there. In terms of locations, the secondary is right after the catalytic converter and the primary is on the ... Double check those vac lines, or get me a pic of which ones they were. It culd be that your ECu is re-learning fuel trims after having tehm way ... P0059 is HO2S Heater Resistance (Bank 2 Sensor 1) and is an electrical problem in the circuit. It's either a wiring/connector issue(corrosion, water in ... They are easy enough to replace yourself, all you need are the dedicated sockets, which are available anywhere, and less than an hour of your time. Changing an oxygen sensor is a beginner DIY job. Once you get started, the work itself should take 30 to 60 minutes if your sensors are easy to reach and ... Simply unplug the sensor when it has failed or reached its 100K mile service life and then remove it by placing a proper socket or closed end 22mm wrench on it. Use a ratchet wrench and an oxygen sensor socket to unscrew it. You can also use an open-end wrench to unscrew the sensors. The Toyota AFR sensors go bad somewhere between 120K - 200K+ miles. There will be mostly poor fuel economy coupled with a correlated degradation in proper fuel ... O2 sensor is an emission system part. If their contention is that the sensor is good but can't be safely removed and replaced without damage ...