DTC Setting Condition
| Item | DTC setting condition | |
|---|---|---|
| Main Action | Signal monitoring | |
| Prerequisite Condition | Case 1 | 30 seconds after dew point type detection Activate fuel feedback control Battery voltage 11V or above Exhaust gas temperature 480 ~ 800°C No injector error Oxygen sensor heater error-free Downstream oxygen voltage over 0.6V |
| Case 2 | 30 seconds after dew point type detection Activate fuel feedback control Battery voltage 11V or above Exhaust gas temperature 480 ~ 800°C No injector error Oxygen sensor heater error-free Downstream oxygen voltage 0.1V or less |
|
| Case 3 | 30 seconds after dew point type detection Activate fuel feedback control Battery voltage 11V or above Exhaust gas temperature 480 ~ 800°C No injector error Oxygen sensor heater error-free |
|
| Trouble Determination | Case 1 | When the Upstream oxygen sensor signal line voltage is 0.06 ~ 0.4V |
| Case 2 | When the Upstream oxygen sensor signal line voltage is 0.06 ~ 1.15V | |
| Case 3 | When the heater pulse coupling frequency to the Upstream oxygen sensor signal is more than 5 times per 10 heating pulses | |
| Diagnosis Time | Case 1 | 25 seconds |
| Case 2 | 10 seconds | |
| Case 3 | - | |
| Threshold Value for Warning Light | 2nd drive cycle | |