DTC Detection Logic
P0031 A/F SENSOR 1 HEATER - DTC DESCRIPTION
| DTC | M.U.T.-III SE screen terms (Trouble diagnosis content) | DTC detection condition | ||
|---|---|---|---|---|
| P0031 | 00 | HO2S1 HTR (B1) (HO2S heater control circuit low bank 1 sensor 1) |
Diagnosis condition | Engine running at idle |
| Signal (terminal) | A/F sensor 1 heater signal | |||
| Threshold | An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater | |||
| Diagnosis delay time | - | |||