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DTC P0172 System Too Rich (Bank 1): DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible cause |
| DTC Strategy |
- Monitor the fuel trim value
|
- Blocking of intake system
- Fuel leakage in injector
- Improper fuel pressure
|
| Enable Conditions |
- Engine warm-up sufficiently
- Drive at a steady speed over 5 minutes (Vehicle speed ≤ 130km/h)
- 60°C (140°F) < Engine coolant temperature ≤ 115°C (239°F)
- No disabling faults (DTCs related to HO2S, purge valve, catalyst)
|
| Threshold value |
- Average of short term fuel trim < 1.2 and Average of long term fuel trim < 0.8
|
| Diagnosis Time |
|
| MIL On Condition |
|