DTC Detection Logic
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD and 2019 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
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DTC No.
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Trouble diagnosis name
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DTC detecting condition
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P0531
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REFRIGERANT PRESS SENSOR A
(A/C refrigerant pressure sensor A circuit range/performance
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ECM detects that input signal from the refrigerant pressure sensor is out of the specified range
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