HOW TO CHANGE OR REPLACE OXYGEN SENSOR / O2 SENSOR ON A TOYOTA COROLLA

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CHECK ENGINE LIGHT COME ON. MOST COMMON PROBLEMS IS THE OXYGEN SENSOR/02 SENSOR. HERE IS A STEP BY STEP ON HOW TO CHANGE BOTH SENSORS ON COROLLA.

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Great job with the video. You did a nice job showing what needs to be done, where the bolts were, following through in a step by step manner, and explains and showing where everything was. In some videos the explanations seem geared to mechanics, but a mechanic probably wouldn’t need to watch a video. So thank you from someone who handles some basic maintenance on our own cars, and some family members.

ericnoble

I ordered the two Denso sensors from Rock Auto, they arrived the next day, they had updated part numbers that matched the OEM and the ones listed on the video. Did both in less than an hour and only had one tight frozen bolt on the shield and the downstream sensor was also frozen tight. WD-40 and an admixture of some ancient penetrant got both loosened up after awhile. If your Corolla is old, consider some PB Blaster. The Toyota electrical connectors slowed the job, as usual. If I had to do it over, I'll bet I could do it in half the time. Saved us a couple of hundred bucks in labor at the local shop, worth doing. Car ran better and the engine management system never skipped a beat. Wife is happy, I didn't even cuss too much, either. One more thing, the parts instructions note that you should use some electrical tape to seal the grommet in place on the floorboard. DO IT. The insulation was damp around the grommet from a recent rain.The old grommet was 18 years old. The tape is also noted as a way to keep the wiring from getting pulled out or contacting hot surfaces near the catalytic converter.

mikegrant