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

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Oxygen Sensor: Locations

O2 Sensors - Location

HO2S identification is as follows:
- Upstream HO2S on #1 cylinder bank: HO2S 1/1
- Upstream HO2S on opposite bank: HO2S 2/1
- Downstream HO2S: HO2S 1/2

NOTE: No interchangeability between upstream HO2S (green connector) and downstream HO2S (blue connector).