DTC Detection Logic
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.
The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0131 |
A/F SENSOR1 (B1) (O2 sensor circuit low voltage bank 1 sensor 1) |
Diagnosis condition |
- |
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Signal (terminal) |
The A/F signal computed by ECM |
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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) (O2 sensor circuit high voltage bank 2 sensor 1) |
Diagnosis condition |
- |
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Signal (terminal) |
The A/F signal computed by ECM |
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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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