The PCM monitors front O2 sensor pumping current trim circuit(VRC) and sets DTC P2626 if front O2 sensor signal stuck is detected.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Electrical Monitoring | 1. Poor Connector Connection 2. Open in Upstream O2 Sensor Control Circuit 3. Defected Upstream O2 Sensor |
Enable Conditions |
•
Sensor Pump Current Valid
•
Battery voltage higher than 11V and lower than 16V | |
Threshold value |
•
Upstream O2 sensor voltage during deceleration fuel cut off higher than 4.7V | |
Diagnosis Time |
•
15 sec. | |
MIL On Condition |
•
2 Driving Cycle |
