DTC Detection Logic
WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal is not inordinately low.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0131 |
A/F SENSOR1 (B1) [Air fuel ratio (A/F) sensor 1 (bank 1) circuit low voltage] |
Diagnosis condition |
- |
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Signal (terminal) |
Air fuel ratio sensor 1 signal |
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Threshold |
The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V |
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Diagnosis delay time |
- |
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P0151 |
A/F SENSOR1 (B2) [Air fuel ratio (A/F) sensor 1 (bank 2) circuit low voltage] |
Diagnosis condition |
- |
|
Signal (terminal) |
Air fuel ratio sensor 1 signal |
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|
Threshold |
The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V |
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|
Diagnosis delay time |
- |
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