The oxygen sensor plays an important role in your Audi’s emission management system. Damaged oxygen sensor results in low fuel efficiency. There is also an increase in the carbon dioxide emission level. See this slideshow to learn when to replace the oxygen sensor in an Audi.

1. When you Have to
Replace the Oxygen
Sensor (O2) in Audi?

2. O2 or oxygen sensor is a
vital part of Audi's
emission management.

3. Located in the exhaust framework
to measure the amount of oxygen
in the exhaust gases.

4. O2 sensor also informs the
ECM to re-adjust the air to
fuel ratio in the car engine.

5. Damaged O2 sensor in your Audi
can cause several issues in a long
way such as:-

6. Unable to inform engine to
adjust the air to fuel ratio

7. Produce harmful emission
in the environment

8. Damage the catalytic
converter

9. Here are the signs that help
you to identify the faulty O2
sensor in Audi to replace it:-
Low fuel Mileage
Over CO2 emission levels
Illuminated check engine light
Reduced engine sound
Regular engine misfiring

10. Low fuel mileage

11. Oxygen sensors alter the
engine's air and fuel proportion
to deliver power in Audi.

12. Failed O2 sensor may enable
excessive unburnt fuel and
brings low fuel mileage.

13. Over CO2 emission
levels

14. Generally, O2 sensors will
keep emissions below the
defined threshold.

15. Faulty sensor will degrade the
emission level of the Audi
during a pollution check.

16. Illuminated check
engine light

17. Check engine light will be
illuminated on the dashboard
when the car diagnoses with any
issues.

18. Like other issues, check engine
light will turn on when Audi
have a bad O2 sensor.

19. Reduced engine sound

20. People can notice reduced engine
sound in the car when it is
running at a low speed or idle
mode.

21. The Reason behind is bad O2
sensor influences the air and fuel
mix and combustion in the engine.

22. Regular engine
misfiring

23. Oxygen sensor plays a
significant role in a car and
performs several functions like:
Control engine timing
Maintain combustion intervals

24. But failed oxygen sensor
may disturb all the engine
functions and cause:
Irregular engine idle
Engine misfiring
Running roughly

25. If you notice any of the signs
in Audi, then check the
oxygen sensor immediately.

26. Consult with a reputed
mechanic for diagnosing and
replacing the oxygen sensor.

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