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.
ECM detects a voltage of power source for sensor is excessively low or high
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0643 |
SENSOR POWER/CIRC (Sensor reference voltage "A" circuit high) |
Diagnosis condition |
Start engine and let it idle |
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Signal (terminal) |
Sensor power supply 1 circuit |
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Threshold |
ECM detects a voltage of power source for sensor is excessively low or high |
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Diagnosis delay time |
- |
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