A look at what Bosch has done with the oxygen sensor. Find all the details inside Popular Hot Rodding Magazine.

In dumbed-down parlance, the O2 sensor “sniffs” the exhaust, and depending on the air/fuel ratio levels, converts that reading into a voltage signal that’s fed to the ECU.

When Should I Replace The O2 Sensor? The answer to this question is complex, as these sensors are not your standard maintenance items. No indicator lights on your dashboard or other means could hint ...

The oxygen sensor was replaced but the 'check engine' light won't go out. Now what? Which octane fuel is best? AAA's Car Doctor has answers.

Narrowband oxygen sensor voltage output. The output is heavily dependent on sensor temperature and highly non-linear, making these sensors unsuitable for delivering a true AFR reading.