Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Oxygen Sensor: Description and Operation

- The heated oxygen sensor is equipped with a heater to provide constant detection of oxygen concentration even when exhaust gas temperature is low.
- The heated oxygen sensor sends oxygen content signals to the PCM.
- The heated oxygen sensor uses the principles of a solid electrolyte oxygen content battery.
- The heated oxygen sensors are fitted to each end of the exhaust manifold, the three way catalytic converter, and the front pipe.