DTC Detection Logic
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
| DTC No. | CONSULT screen terms (Trouble diagnosis content) |
DTC detecting condition | Possible cause |
|---|---|---|---|
| P0030 | A/F SEN1 HTR (B1) (HO2S heater control circuit bank 1 sensor 1) |
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.) |
|
| P0031 | A/F SEN1 HTR (B1) (HO2S heater control circuit low bank 1 sensor 1) |
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.) |
|
| P0032 | A/F SEN1 HTR (B1) (HO2S heater control circuit high bank 1 sensor 1) |
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.) |
|
| P0036 | A/F SEN1 HTR (B2) (HO2S heater control circuit bank 2 sensor 1) |
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.) |
|
| P0051 | A/F SEN1 HTR (B2) (HO2S heater control circuit low bank 2 sensor 1) |
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.) |
|
| P0052 | A/F SEN1 HTR (B2) (HO2S heater control circuit high bank 2 sensor 1) |
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.) |
|