DTC Detection Logic
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DTC No. |
Trouble diagnosis (Trouble diagnosis content) |
DTC detecting condition |
Possible cause |
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P0030 |
A/F SEN1 HTR (B1) [A/F sensor 1 heater (bank 1) performance] |
Deterioration in A/F sensor 1 heater performance. (Voltage signal transmitted from A/F sensor 1 heater to ECM is higher/lower than voltage in the normal range.) |
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P0031 |
A/F SEN1 HTR (B1) [A/F sensor 1 heater (bank 1) control circuit low] |
The current amperage in the A/F sensor 1 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater.) |
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P0032 |
A/F SEN1 HTR (B1) [A/F sensor 1 heater (bank 1) control circuit high] |
The current amperage in the A/F sensor 1 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater.) |
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P0050 |
A/F SEN1 HTR (B2) [A/F sensor 1 heater (bank 2) performance] |
Deterioration in A/F sensor 1 heater performance. (Voltage signal transmitted from A/F sensor 1 heater to ECM is higher/lower than voltage in the normal range.) |
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P0051 |
A/F SEN1 HTR (B2) [A/F sensor 1 heater (bank 2) control circuit low] |
The current amperage in the A/F sensor 1 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater.) |
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P0052 |
A/F SEN1 HTR (B2) [A/F sensor 1 heater (bank 2) control circuit high] |
The current amperage in the A/F sensor 1 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater.) |
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