Prizm L4-108 18L DOHC VIN 8 MFI Oxygen Sensor | Component Information | General Description
Oxygen Sensor: Description and Operation
Sub-Heated Oxygen Sensor
DESCRIPTION
The Sub-Heated Oxygen Sensor (Sub-HO2S) is located on the exhaust system, after the Three Way Convertor and detects the concentration of
oxygen in the exhaust gases.
CONSTRUCTION
The Sub-HO2S consists of the zirconia element (with thin platinum surface coating) which generates electromotive force, a lead wire which
provides a voltage signal to the PCM, a heater which promotes activation of the zirconia element, lead wires for the heater power and ground
circuit and cover and housing which protect the zirconia element from damage.
