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DTC P0170 Fuel Trim (Bank 1): DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Monitoring deviation of lambda controller
|
- Air leakage or restriction in intake or exhaust system
- Dirty engine oil or oil level too high
- Front HO2S or MAFS contamination
- Fuel system
- EVAP system
- Faulty sensor signals
|
| Enable Conditions |
- Lambda control active
- Coolant temperature > 70°C (158°F)
- No relevant failure
- 10V < Battery voltage < 16V
|
| Threshold Value |
- Lambda controller < -30% or > +50%
|
| Diagnostic Time |
|
| MIL On Condition |
|