| DTC Strategy |
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- Poor connector connection
- Open in upstream O2 sensor pumping current circuit (Vip)
- Faulty upstream O2 sensor
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| Enable Condition |
- Battery voltage is between 9V and 16V
- Primary O2 sensor heating duration (after e point end) is more than 70 seconds
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| Threshold Value |
- Measured sensor resistor is more than 4644Ω
- Difference between pumping current circuit (Vip) voltage and virtual ground (Vg) voltage is more than 1.2V and difference between nernst voltage (Vn) voltage and virtual ground (Vg) voltage is more than 1.2V
- Difference between pumping current circuit (Vip) voltage and virtual ground (Vg) voltage is less than 1.2V and difference between nernst voltage (Vn) voltage and virtual ground (Vg) voltage is less than 1.2V
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| Diagnostic Time |
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| MIL ON Condition |
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