Air Fuel Ratio Sensor: Inspection
WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)
- Measure the resistance of the sensor.
Standard resistance
AIR FUEL RATIO SENSOR (FOR BANK 1 SENSOR 1)
| Tester Connection |
Specified Condition |
| 1 (HA1A) - 2 (+B) |
1.8 to 3.4 Ω at 20°C (68°F) |
| 1 (HA1A) - 4 (A1A-) |
10 kΩ or higher |
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If the resistance is not as specified, replace the sensor.