| Case1 |
DTC Strategy |
|
- Poor connection
- Open or short power/ground in signal circuit
- B1S1
|
| Enable Conditions |
- Dew point end detected
- Target lambda = 1
- Battery voltage > 10.7V
- Exhaust gas temperature (model): 600°C ~ 900°C
- Upstream O2S Heater control On
|
| Threshold Value |
- Internal resistance > 20kΩ
|
| Case2 |
DTC Strategy |
|
| Enable Conditions |
- Dew point end detected
- Target lambda = 1
- Battery voltage > 10.7V
- Exhaust gas temperature (model) < 900C
- Upstream O2S Heater control On
|
| Threshold Value |
- 0.4V < Upstream O2S voltage < 0.6V
|
| Diagnostic Time |
|
| MIL ON Condition |
|