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 logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Heated Oxygen Sensor Resistance Learn Reset Notice

Heated Oxygen Sensor Resistance Learn Reset Notice

Notice: When replacing the HO2S perform the following:

* A code clear with a scan tool, regardless of whether or not a DTC is set

* HO2S heater resistance learn reset with a scan tool, where available

Perform the above in order to reset the HO2S resistance learned value and avoid possible HO2S failure.