ECM sets DTC P0038 if the ECM detects the downstream HO2S heater control circuit is shorted to power.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Heater circuit monitoring | 1. Poor connector connection 2. Open/short in power circuit 3. Short to power in control circuit 4. Faultydownstream O2 sensor |
Enable Condition |
•
Engine speed is higher than 240RPM | |
Threshold Value |
•
Short to power | |
Diagnosis Time |
•
Continuous | |
MIL ON Condition |
•
3 driving cycles |
