22690AA440 Subaru SEN ASSY-OXYGEN, Price: 115.89$, Weight: 0.261kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Subaru |
22690AA440 |
SEN ASSY-OXYGEN |
0 |
0.261 |
2-3 |
115.89$ |
| Not Available | ||||||
Compatibility
| Body | Engine | Vehicle Grade | Market | Model Year From | Model Year To | Suspension | Diagram |
|---|---|---|---|---|---|---|---|
| ﾜｺﾞﾝ | 2.0L EMPI DOHC ﾀｰﾎﾞ | GT LIMITED | Japan | 01.2001 | 04.2001 | ﾉｰﾏﾙｻｽﾍﾟﾝｼﾖﾝ | View |
Engine Oxygen Sensor Assembly (Upstream O2)
This sensor is a key part of the fuel control system. It measures how much oxygen is left in the exhaust stream, then sends a fast signal to the ECU. The ECU uses this data to correct air/fuel ratio in real time, keeping power smooth, emissions low, and fuel use under control ⚙️.
Why this part is needed
Modern engines must run close to the ideal mixture. A healthy O2 sensor helps the ECU fine-tune injection and ignition adjustments, especially during warm running, cruising, and light acceleration.
How it works
Inside the sensor is a heated element that reaches operating temperature quickly. As exhaust oxygen changes, voltage/resistance changes too. The ECU reads these changes and trims fuel delivery, preventing rich or lean running.
What happens if it’s broken
- Check Engine light and stored mixture-related fault codes
- Higher fuel consumption and fuel smell from exhaust
- Rough idle, hesitation, or weak response
- Possible catalytic converter overload over time ?
Compatibility
- Carnival 24 (2024-)