Operation CHARM: Car repair manuals for everyone.

Electrical Specifications

VOLTAGE SPECIFICATIONS
Normal Voltage
Normal oxygen sensor voltage varies between 100 mV to 1000 mV while in "Closed Loop" operation.

Rich Exhaust
A rich exhaust trend (low oxygen content) causes the sensor voltage to stay above 0.6 volt.

Lean Exhaust
A lean exhaust (high oxygen content) causes the sensor voltage to remain below 0.3 volt.