If the signal output satisfies the threshold value under enable conditions, ECM sets DTC P0134.
(This DTC might be caused by the malfunction of Heater circuit, so, check the heater circuit first.)
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Signal check | 1. Poor connection 2. Open or short in signal circuit 3. S1 |
Enable Conditions |
•
Dew point end detected
•
Fuel feed back control active
•
Battery voltage is higher than 11V
•
Exhaust Gas temperature is between 280℃ and 800℃
•
No injector error
•
No upstream O2 sensor heater error | |
Threshold Value |
•
Sensor voltage : 0.4~0.6V | |
Diagnostic Time |
•
10 sec. | |
MIL ON Condition |
•
3 driving cycle |
