Test 4 Wire O2 Sensor Multimeter Testing

How to test a 4 wire o2 sensor with a multi-meter and cheap obd2 scan tool!

In this video I will be diagnosing the faulty o2 sensor on my MX5 donor car ‘The Phoenix’. I will be using a multi-meter and a cheap obd2 reader with free software that can be used on your smart phone. I will be removing the sensor and testing the o2 sensor leads, ensuring the sensor is at fault and not a wiring issue! Disclaimer Last ...

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