DTC Detection Logic
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
DTC P0090 may be displayed when running out of gas.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0090 |
FUEL PUMP (Fuel pressure regulator 1 control circuit/open) |
A |
Diagnosis condition |
-- |
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Signal (terminal) |
Fuel rail pressure sensor signal |
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Threshold |
Fuel rail pressure remains at 1.1 MPa (11.2 kg/ cm 2 , 159.5 psi) or less during engine running. |
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Diagnosis delay time |
5 seconds or more |
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B |
Diagnosis condition |
-- |
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Signal (terminal) |
Fuel rail pressure sensor signal |
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Threshold |
Fuel rail pressure remains at 27.0 MPa (275.4 kg/ cm 2 , 3915.0 psi) or more during engine running. |
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Diagnosis delay time |
0.3 seconds or more |
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