Hyundai Venue: Heated Oxygen Sensor (HO2S) / Description and operation
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed
on upstream and downstream of the Warm up Catalytic Converter (WCC).
After it compares oxygen consistency of the atmosphere with the exhaust gas,
it transfers the corresponding voltage signal to the ECM. When A/F ratio is
rich or lean, it generates approximately +1V or 0V respectively.
In order that this sensor normally operates, the temperature of the sensor tip
must be higher than predetermined temperature. So it has a heater which is controlled
by the ECM duty signal. When the exhaust gas temperature is lower than the specified
value, the heater warms the sensor tip.

Specification
[Bank 1 / Sensor 1]
Item
Specification
Heater Resistance (Ω)
Approx...
Other information:
Troubleshooting
Ignition System
Symptom
Suspect Area
Remedy
Engine will not start or is hard to
start (Cranks OK)
Ignition lock switch
Inspect ignition lock switch, or replace as required
Ignition coil
Inspect ignition coil, or replace as required
Spark plugs
Inspect spark plugs, or replace as required
Ignition wiring disconnected or broken
Repair wiring, or replace as required
Rough idle or stalls
Ignition wiring
Repair wiring, or replace as required
Ignition coil
Inspect ignition coil, or replace as required
Engine hesitates/poor acceleration
Spark plugs and spark plug cables
Inspect spark plugs / cable, or replace as required
Ignition wiring
Repair wiring, or replace as required
Poor mileage
Spark plugs and spark plug cables
Inspect spark plugs / cable, or replace as required
Charging System
Symptom
Suspect Area
Remedy
Charging warning indicator does not
light with ignition switch "ON" and
engine off...
The vehicle’s front and rear seats have adjustable head restraints. The head
restraints provide comfort for passengers, but more importantly they are designed
to help protect passengers from whiplash and other neck and spinal injuries during
an accident, especially in a rear impact collision...
Categories

This warning light informs the driver the following situations.
-- Forward Collision-Avoidance Assist system malfunction (if equipped)
-- Forward Collision-Avoidance Assist radar blocked (if equipped)
-- Blind-Spot Collision Warning system malfunction (if equipped)
-- Blind-Spot Collision Warning radar blocked (if equipped)
-- Lamp malfunction (if equipped)
-- High Beam Assist malfunction (if equipped)
-- Tire Pressure Monitoring System (TPMS) malfunction (if equipped)
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