Oxygen sensors detect the amount of oxygen in the exhaust. Oxygen sensors usually don’t have a replacement schedule. A bad oxygen sensor can be diagnosed with a code reader or scan tool. A car’s ...

My grandfather has a '97 Ford F-150 with 147,000 miles on it. After the check-engine light came on, he took it to have it scanned, and the scan tool said the upstream O2 sensor was bad. So he replaced ...

Stricter environmental controls and the requirement to create less pollution has led to far more complex automotive exhaust systems. One component of these systems is the oxygen sensor or Lambda ...