Measure the resistance of the sensor.Standard resistance
HEATED OXYGEN SENSOR STANDARD RESISTANCE SPECIFICATIONS
| Tester Connection |
Specified Condition |
| 1 (HT)-2(+B) |
11 to 16Ω at 20°C (68°F) |
| 1 (HT)-4(E) |
10 kΩ or higher |
If the resistance is not as specified, replace the sensor.
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