If the analog signal for the O2 ratio from the sensor after PT1 filtering, during the calibration is below the minimum threshold value, ECM sets DTC P22B600.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Signal monitoring | 1. Poor connector connection 2. Faulty downstream lambda sensor circuit 3. Faulty downstream lambda sensor | |
Enable Condition |
•
Engine running | ||
Threshold Value |
•
Analog signal for the O2 ratio from the sensor after PT1 filtering during calibration is below minimum threshold value | ||
Detecting Time |
•
- | ||
Fail Safe | MIL |
•
On | |
