Heated Oxygen Sensors (Ho2S); Operation - Ford Ranger Maintaince And Repair Manual

HOW TO USE THIS BOOK

Heated Oxygen Sensors (HO2S)

OPERATION

The oxygen sensor supplies the computer with a signal which indicates a rich or lean condition during engine
operation. The input information assists the computer in determining the proper air/fuel ratio. A low voltage
signal from the sensor indicates too much oxygen in the exhaust (lean condition) and, conversely, a high
voltage signal indicates too little oxygen in the exhaust (rich condition).
Typical Heated Oxygen Sensor (H2OS)−most vehicles are equipped with multiple sensors
The oxygen sensors are threaded into the exhaust manifold and/or exhaust pipes on all vehicles. Heated
oxygen sensors are used on all models to allow the engine to reach the closed loop faster.
Heated Oxygen Sensors (HO2S) 537