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

H59 - Check HO2S For Short to Ignition Run Circuit

- Key Off.

- HO2S disconnected.

- Measure resistance between Test Pins 71 and 97 and HO2S Signal at the HO2S harness connector.

- Is resistance greater than 10,000 ohms?

YES -- For DTCs 1132, 1152, 1130 AND 1150: Go to H60. H60 - Attempt to Generate DTCs 1131 and 1151

NO -- REPLACE HO2S. DRIVE vehicle 5 miles/55 mph. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes