| DTC Strategy |
- Electrical check - Check symptoms related to lambda sensor open circuit
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- Poor connection or damaged harness
- Open in HO2S control circuit (Vg)
- Front HO2S
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| Enable Conditions |
- Upstream O2 sensor operative readiness is detected.
- Battery voltage is between 11V and 16V
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| Threshold Value |
- Reference virtual ground circuit open (Vg)
- Pump voltage (Vip) is 1.2V greater than virtual ground voltage (Vg) and Nernst voltage (Vn) is 1.2V greater than virtual ground voltage (Vg)
- Pump voltage (Vip) is 1.2V lower than virtual ground voltage (Vg) and Nernst voltage (Vn) is 1.2V lower than virtual ground voltage (Vg)
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| Diagnostic Time |
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| Mil On Condition |
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