| DTC Strategy |
|
- Related fuse blown or missing
- Heater control circuit open or short
- Power supply circuit open or short
- Poor connection or damaged connector
- Faulty HO2S
|
| Enable Conditions |
Case 1 |
- Downstream O2 sensor normal heating is more than 58s
- Engine off duration time since the last engine stop is more than 60 minutes
|
| Case 2 |
- Engine speed is higher than 32 RPM
- Battery voltage is higher than 10V and lower than 16V
- Exhaust gas temperature model is high than 300°C (572°F)
|
| Threshold Value |
Case 1 |
- HO2S internal resistance is higher than 1000Ω
|
| Case 2 |
- ECU power stage diagnosis output voltage is 2.218V to 2.842V
|
| Diagnostic Time |
Case 1 |
|
| Case 2 |
- Continuously (5.0s/recurrence 100 ms)
|
| MIL ON Condition |
|