DTC P0140 Ho2S Circuit No: Activity Detected (Bank 1/Sensor 2): DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible Cause |
| Case 1) |
DTC Strategy |
- Signal plausibility during fuel cut off
|
- Related fuse blown or missing
- Contact resistance in connectors
- HO2S contamination
|
| Enable Conditions |
- (VLS_DOWN > 0.56V or < 0.25V) or Catalyst model temp > 550°C
- Sensor preheating and full heating phases finished
- In fuel cut off phase
- In fuel cut off active
- 20g < Integrated mass air flow
- No relevant failure
|
| Threshold Value |
- Voltage with fuel cut off > 0.1V
|
| Diagnostic Time |
|
| Case 2) |
DTC Strategy |
- Signal plausibility after fuel cut off
|
| Enable Conditions |
- Integrated engine load in fuel cut off > 8g
- Integrated engine load after fuel cut off > 12g
- Coolant temperature > 74°C (165°F)
- (VLS_DOWN > 0.56V or < 0.25V) or Catalyst model temp > 550°C
- 4.82km (3mph) < Vehicle speed < 180km/h (112mph)
- Catalyst temperature > 350°C (662°F)
- No relevant failure
- 11V < Battery voltage < 16V
|
| Threshold Value |
- Sensor signal increase < 10mV
|
| Diagnostic Time |
- 5 after fuel cut off phase
|
| Mil On Condition |
|