| DESCRIPTION |
A/F sensor circuit no activity detected |
| DETECTION CONDITION |
Determination conditions |
- The condition in which the A/F sensor element impedance is the specified value or more continues for specified period.
|
| Preconditions |
- Battery voltage: 11-18 V
- The following DTCs are not detected:
- A/F sensor heater: P0031:00, P0032:00
- A/F sensor: P0131:00, P0132:00
|
| Drive cycle |
|
| Self test type |
|
| Sensor used |
|
| FAIL-SAFE FUNCTION |
- Fixes duty value of A/F sensor heater
- Stops fuel feedback control of A/F sensor
|
| VEHICLE STATUS WHEN DTCs ARE OUTPUT |
- Illuminates check engine light.
|
| POSSIBLE CAUSE |
- A/F sensor malfunction
- A/F sensor connector or terminals malfunction
- A/F sensor related wiring harness malfunction
- A/F sensor loose
- PCM connector or terminals malfunction
- PCM malfunction
|