PCM/ECM sets DTC P0038 if the PCM/ECM detects that the rear HO2S heater control line is open or shorted to battery line.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Electrical Check | 1. Open or short to battery in control harness 2. Poor connection or damaged harness 3. Faulty HO2S |
Enable Conditions |
•
No relevant failure
•
10V< Battery voltage <16V
•
3.5%< O2 sensor heater control duty <96.5% | |
Threshold Value |
•
Open circuit or short circuit to battery | |
Diagnostic Time |
•
10 seconds | |
Mil On Condition |
•
2 Drive Cycles |
