DTC P0030 Ho2S Heater Control Circuit (Bank 1 / Sensor 1): DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Evaluate O2 sensor Element Temperature via measuring Element Resistance
|
- Related fuse blown or missing
- Poor connection or damaged harness
- Faulty HO2S
|
| Enable Conditions |
- O2 sensor pre-heating phase finished (dew point passed)
- No relevant failure
- Coolant temperature drop since the last engine stop > 25°C (77°F)
- 10V< Battery voltage < 16V
- 3.5% < O2 sensor heater control duty < 96.5%
- O2 sensor operative ready (to ensure no open circuit failure present)
|
| Threshold Value |
- HO2S internal resistance > 2500Ω~9500Ω
|
| Diagnostic Time |
|
| MIL On Condition |
|