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 |
•
Sensor Current check | 1. Poor connection 2. Open or short power/ground in signal circuit 3. Upstream O2S |
Enable Conditions |
•
Exhaust Gas Temp < 800℃
•
0.95 < Target Lambda < 1.05
•
20% < Heating ratio < 80% | |
Threshold Value |
•
Sensor Current Change > 190 ㎂ | |
Diagnosis Time |
•
- | |
Mil On Condition |
•
2 trips |
※ ∆usvk : Sum of the signal voltage change value (S1)
※ S1 : upstream oxygen sensor / S2 : downstream oxygen sensor
