If ECM/PCM detects that the output signal satisfies the threshold values under enable conditions, ECM/PCM 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. Damaged or corroded terminals 3. HO2S (S1) | |
General Enable Conditions |
•
Dew point end detected
•
Fuel feed back control active
•
Battery voltage is higher than 11V
•
Exhaust Gas temperature is higher than 280°C and lower than 800°C
•
No injector error
•
No upstream O2 sensor heater error | ||
Case 1 | Enable Conditions |
•
S2 sensor voltage is higher than 0.5V | |
Threshold Value |
•
S1 sensor voltage is higher than 0.06V and lower than 0.4V | ||
Diagnostic Time |
•
25 sec. | ||
Case 2 | Enable Conditions |
•
S2 sensor voltage is lower than 0.1V | |
Threshold Value |
•
S1 sensor voltage is higher than 0.6V and lower than 1.08V | ||
Diagnostic Time |
•
10 sec. | ||
Case 3 | Enable Conditions |
•
Continuous | |
Threshold Value |
•
Rate of heater pulse coupling to sensor signal is higher than 5 times per every 10 heating pulses | ||
Diagnostic Time |
•
The temperature difference between IAT and ECTS is lower than 20.3°C | ||
MIL ON Condition |
•
3 driving cycles | ||
※ S1 : upstream oxygen sensor / S2 : downstream oxygen sensor
