If the PCM detects short to ground or open in heater circuit, the PCM sets a P0057 DTC.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Detects a short to ground or open | 1. Poor Connection 2. Open in Power Circuit 3. Open or short to ground in control circuit 4. HO2S(B1/S1) 5. PCM |
Enable Conditions |
•
No disabling Faults
•
Engine Running
•
Battery Voltage between 11V and 16V | |
Threshold value |
•
Short to ground or open circuit | |
Diagnosis Time |
•
Continuous (More than 5 seconds failure for every 10 seconds test ) | |
MIL On Condition |
•
3 Driving Cycles |
