If ECM detects that the output signal satisfies the threshold values under enable conditions, ECM sets DTC P0130.
( This DTC might be caused by the malfunction of Heater circuit, so, check the heater circuit first. )
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Rationality check | 1. Poor connection 2. Open or short power/ground in signal circuit 3. S1 | |
General Enable Conditions |
•
Dew point end detected
•
Fuel feed back control active
•
Battery voltage > 11V
•
Exhaust Gas temperature = 280℃~800℃
•
No injector error
•
No upstream O2 sensor heater error | ||
Case1 | Enable Conditions |
•
S2 sensor voltage > 0.5V | |
ThresholdValue |
•
S1 sensor voltage : 0.06 ~ 0.4V | ||
DiagnosticTime |
•
25 sec | ||
Case2 | Enable Conditions |
•
S2 sensor voltage < 0.1V | |
ThresholdValue |
•
S1 sensor voltage : 0.6 ~ 1.08V | ||
DiagnosticTime |
•
10 sec | ||
Case3 | Enable Conditions |
•
Time after dew point end detected > 10s | |
ThresholdValue |
•
Counter of l ∆usvk > 2V during 0.04 sec after heater on→off l ≥ 5 times | ||
MIL ON Condition |
•
3 driving cycle | ||
※ ∆usvk : Sum of the signal voltage change value (S1)
※ S1 : upstream oxygen sensor / S2 : downstream oxygen sensor
