OBD Codes

Get detailed guides to the definition, meaning, symptoms, causes, diagnosis, and how to fix OBD2 codes. In this category, you can also find OBD1 codes of Ford, GM, etc.

P0169 – Incorrect Fuel Composition

Filling up a car’s fuel tank with wrong fuel is a common mistake people do on the fuel stations. P0169 is the most widely used OBD2 DTC code for wrong fuel composition.