DTC P1166: O2 Sensor System Lambda Bank Controller At The Limit (Bank 1): DTC Detecting Condition
- DTC Description, if the lambda controller reaches to the maximum or minimum threshold, then no more feedback control is possible and emission will be increased. The ECM sets DTC P1166 if no proportional fuel adaptation occurs for a defined time after the lambda controller reached to minimum or maximum threshold.
If the same error code is set in the next driving cycle, the ECM illuminates the MIL.
- Conditions for Setting the DTC