When the ECM detects a short to ground in the HO2S(S1) heater control circuit , the ECM sets DTC P0031.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Electrical check | 1. Poor connection 2. Short to ground in control circuit 3. HO2S(S1) |
Enable Conditions |
•
IG ON | |
Threshold Value |
•
Short to ground | |
Diagnostic Time |
•
Continuous | |
MIL ON Condition |
•
2 driving cycles |
