DTC P0140 Ho2S Circuit No Activity Detected (Bank 1 / Sensor 2): DTC Detecting Condition
DTC DETECTING CONDITION AND POSSIBLE CAUSE
| Item |
Detecting Condition |
Possible Cause |
| DTC strategy |
Case1) |
|
- Related fuse blown or missing
- Contact resistance in connectors
- HO2S contamination
|
| Case2) |
|
| Enable Conditions |
Case1) |
- O2 sensor operative readiness detected
- Integrated mass air flow in lask fuel cut off > 4g
- Integrated mass air flow in part load > 250g
- Coolant temperature > 74.25°C
- Downstream O2 sensor signal at end of last fuel cut off < 0.25V
- Sensor preheating and fuel heating phases finished
- Catalyst temperature > 348°C (658°F)
- No relevant failure
- 11V < Battery voltage < 16V
|
| Case2) |
- O2 sensor operative readiness detected
- 20 < Integrated mass air flow in lask fuel cut off < 360g
- Sensor preheating and fuel heating phases finished
- No relevant failure
- 10V < Battery voltage < 16V
|
| Threshold Value |
Case1) |
|
| Case2) |
- Voltage with fuel cut > 0.1V
|
| Diagnostic Time |
Case1) |
- 3 valid fuel cut-off phases
|
| Case2) |
|
| Mil On Condition |
|