DTC P2271 O2 Sensor Signal Stuck Rich (Bank 1 / 2 Sensor 1): DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible cause |
| DTC Strategy |
- Determines if O2 sensor indicates rich exhaust while in decel fuel cut-off
|
- Poor Connection
- Faulty HO2S
- Faulty PCM
|
| Enable Conditions |
- Sensor not in cooled status
- Not in Transient Conditions status
- Airflow present ≥ 2 g/s
- Ignition voltage ≥ 10V
- Fuel reduction not active
- Engine running
- Engine running long enough ≥ 60sec.
- Deceleration fuel cut off conditions present
- Engine coolant warm enough ≥ 60 °C( 140 °F)
- Above conditions met long enough 2: 2sec.
|
| Threshold value |
|
| DiagnosisTime |
- Contineous (More than 11.25sec. failure for every 12.5sec. Test)
|
| MIL On Condition |
|