Signal Waveform & Data
After warming-up, if accelerator pedal is released suddenly around 4000 RPM, the HO2S signal reading will be lower than 200mV resulting from Fuel Cut-Off for the moment. Conversely, if suddenly accelerator pedal is depressed, HO2S signal reading will be around 0.6V ~ 1.0V. At idle, Normally HO2S signal will switch from lean to rich with 3 Hz. And as racing, Its frequency rises.