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
- Heater control circuit open or short
- Power supply circuit open or short
- Contact resistance in connectors
- Faulty HO2S
|
| Enable Conditions |
- Sensor preheating and full heating phases finished
- Time after start elapsed:240 sec.
- 11V < Battery voltage < 16V
- 1% < Heater power < 99%
- Exhaust gas temp. model < 610°C (1,130°F)
|
| Threshold Value |
- O2 sensor element resistance > 1100Ω [Element Temperature < 480°C (896°F)]
|
| Diagnostic Time |
|
| Fail Safe |
|