If open or short to power in signal circuit of front lambda sensor is detected, ECM sets DTC P223900.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Voltage monitoring | 1. Poor connector connection 2. Short to power in signal circuit of front lambda sensor 3. Defected front lambda sensor | |
Enable Condition |
•
Engine running | ||
Threshold Value | Case 1 |
•
Open in current adjust line | |
Case 2 |
•
Output temperature is less than 720℃(1,328℉) | ||
Case 3 |
•
Short to power in signal circuit (Pumping cell, Current adjust, Virtual ground, Nernst cell) | ||
Case 4 |
•
Calculated lambda sensor temperature exceeds maximum specification | ||
Detecting Time | Case 1 |
•
2 sec | |
Case 2 |
•
60 sec | ||
Case 3 |
•
2 sec | ||
Case 4 |
•
30 sec | ||
Fail Safe | Engine OFF |
•
No | |
EGR OFF |
•
No | ||
Torque Limit |
•
No | ||
MIL |
•
On | ||
