DTC P2272 Ho2S Signal Stuck Lean (Bank 2/Sensor 2): DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible cause |
| DTC Strategy |
- Determines if O2 sensor indicates lean exhaust while in Power Enrichment
|
- 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.
- Power Enrichment conditions present
- Engine coolant warm enough ≥ 60°C (140°F)
- Above conditions met long enough S: 2.5sec.
|
| Threshold value |
- O2 sensor voltage < 0.54V and, Air Fuel Ratio ≥ 13.5
|
| Diagnosis Time |
- Continuous (More than 11.25sec. failure for every 12.5sec. Test)
|
| MIL On Condition |
|