- Monitors the amount of oxygen in the exhaust gas.
- This sensor is heated to reach its operating temperature quickly, and it provides feedback to the engine control unit (ECU) on the air-fuel mixture.
- Failure of the heated oxygen sensor can cause several issues, including:
- Reduced fuel efficiency
- Increased emissions
- Check engine light to illuminate
Additional Issues:
- Decreased engine performance
- Rough idling
- Stalling
- Difficulty starting
- Engine surging or hesitation
Recommendation:
- If the heated oxygen sensor fails, replacing it as soon as possible is essential to maintain optimal engine performance and fuel efficiency.
