When the ECM/PCM detects short to ground in the HO2S(S2) heater control circuit, ECM/PCM sets DTC P0037.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Electrical check | 1. Poor connection 2. Short to ground in control circuit 3. HO2S(S2) |
Enable Conditions |
•
Battery voltage is higher than 10.7V and lower than 16V | |
Threshold Value |
•
Short to ground | |
Diagnostic Time |
•
Continuous | |
Mil On Condition |
•
3 driving cycles |
※ S1 : upstream oxygen sensor / S2 : downstream oxygen sensor
