Hyundai Santa Fe: Heated Oxygen Sensor (HO2S). Description and Operation
Description
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed
both upstream and downstream of the Manifold Catalytic Converter. The sensor
output voltage varies in accordance with the air/fuel ratio.
The sensor must be hot in order to operate normally. To keep it hot, the
sensor has a heater which is controlled by the ECM via a duty cycle signal.
When the exhaust gas temperature is lower than the specified value, the heater
warms the sensor tip.
Knock Sensor (KS). Repair procedures
Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Remove the intake manifold. (Refer to Engine Mechanical System - "Intake Manifold") 3. Disconnect the ...
Heated Oxygen Sensor (HO2S). Specifications
Specification HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.5 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2] A/F Ratio (λ) Output Voltage(V) RICH Approx. 0.9 LEAN Approx. 0.04 ...
See also:
Components and Components Location
Components 1. Piston ring 2. Snap ring 3. Piston 4. Connecting rod 5. Connecting rod upper bearing 6. Piston pin 7. Connecting rod lower bearing 8. Connecting rod bearing cap 9. Ladder frame 10. Oil filter ...
Battery recharging
Your vehicle has a maintenance-free, calcium-based battery. If the battery becomes discharged in a short time (because, for example, the headlights or interior lights were left on while the vehicle was ...
Washer fluid
Checking the washer fluid level The reservoir is translucent so that you can check the level with a quick visual inspection. Check the fluid level in the washer fluid reservoir and add fluid if necessary. ...
