OBD2 Codes

P0440 – Evaporative Emission System

The P0440 OBD2 code is one of the most common. It indicates a malfunction in your EVAP system, and is normally very easy to fix. Learn how to diagnose and repair this pervasive diagnostic code.

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.