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
Rich/Lean Bank 1/Bank 2
Scan tool displays RICH or LEAN. Indicates whether
oxygen sensor voltage is greater than a
600 mV threshold voltage (rich) or less than a
300 mV threshold voltage (lean). Should change constantly while in closed loop, indicating that the PCM is controlling the
air/fuel mixture properly.