DTC Detection Logic
WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
- Deterioration in A/F sensor 1 heater performance.
- The current amperage in the A/F sensor 1 heater circuit is out of the normal range.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0030 |
Air fuel ratio (A/F) sensor 1 heater (bank 1) performance |
Diagnosis condition |
Start engine and let it idle |
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Signal (terminal) |
Voltage signal transmitted from A/F sensor 1 heater to ECM |
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Threshold |
Voltage signal is higher/lower than voltage in the normal range |
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Diagnosis delay time |
- |
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P0050 |
Air fuel ratio (A/F) sensor 1 heater (bank 2) performance |
Diagnosis condition |
Start engine and let it idle |
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Signal (terminal) |
Voltage signal transmitted from A/F sensor 1 heater to ECM |
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Threshold |
Voltage signal is higher/lower than voltage in the normal range |
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Diagnosis delay time |
- |
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