If the front lambda sensor signal is stuck lean under engine over-run condition, ECM sets P21950000.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Voltage monitoring | 1. Poor connector connection 2. Defected Injectors 3. Air leak 4. Defected front lambda sensor | |
Enable Condition |
•
Engine running | ||
Threshold Value |
•
Lean signal is detected under engine over-run condition | ||
Detecting Time |
•
500 msec | ||
Fail Safe | Engine OFF |
•
No | |
EGR OFF |
•
No | ||
Torque Limit |
•
No | ||
MIL |
•
On | ||
