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: Testing and Inspection
The "Scan" has several positions that will indicate the state of
Oxygen Sensor (O2) voltage, integrator, and block learn. A problem in the O2 sensor circuit or fuel system, should set a Code 13 (open circuit), Code 44 (lean indication), Code 45 (rich indication), or Code 61 degraded, or contaminated O2 sensor. Refer to System Diagnosis / Diagnostic Charts / Diagnostic Trouble Code Charts if any of these codes were stored in memory.