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 logical successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la
HO2S Xcounts
Scan Tool Range
0 to
255. Indicates the number of times the
HO2S signal has crossed the
450 mV bias voltage during a
1 second interval. A HO2S 1 signal that almost never crosses the bias voltage could indicate a fuel trim problem, a faulty HO2S 1 circuit, or a faulty HO2S 1.