When ECM/PCM detects short to ground in the heater control circuit(S2), 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. Downstream O2S |
Enable Conditions |
•
IG ON | |
Threshold Value |
•
Short to ground | |
Diagnosis Time |
•
- | |
Mil On Condition |
•
2 trips |
※ S1 : upstream oxygen sensor / S2 : downstream oxygen sensor
