P0303 Code Explained: What Does It Mean and How to Fix It?

38K miles and changing oil at 5K intervals , my check engine light came on and the OBD reported a P0303 that wouldn't clear

The P0303 code is triggered when the Engine Control Module detects a misfire in Cylinder 3 A misfire occurs when the air-fuel mixture

p0303 A code P0303 may mean that one or more of the following has happened: Faulty spark plug or wire, Faulty coil , Faulty oxygen sensor, Faulty fuel

p0303 which is a crucial code associated with misfiring Some common factors that can trigger DTC P0303 include: Engine vacuum leak; Faulty fuel