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)

Or, hide this message: temporarily or permanently

Heated Oxygen Sensor (Sensor 1) Inspection

Heated Oxygen Sensor (Sensor 1) Inspection
Check that HO2S 1 signal voltage referring to Step 2 and 3 of DTC P0131 / P0132: O2 Sensor (Bank 1 Sensor -1. Circuit Low Voltage / High Voltage and/or DTC P0151 / P0152: O2 Sensor (Bank 2 Sensor-1. Circuit Low Voltage / High Voltage. If signal voltage does not vary as specified, repair or replace.