Sep 7, 2024 · How to fix a P0303 code quickly and efficiently by addressing spark plugs, ignition coils, and more—discover the essential steps you need to take.

Aug 25, 2024 · The P0303 code means that cylinder 3 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on …

Learn what the P0303 diagnostic trouble code means and how to troubleshoot a misfire in cylinder 3 of your engine with AutoZone.

May 30, 2025 · The P0303 code indicates your 3 cylinder is misfiring. A misfire occurs when one of the cylinders inside of your engine doesn’t fire because something is off in the fuel-air-spark ratio.

Oct 6, 2025 · One prevalent code is P0303, a cylinder misfire indicator. Read on to learn the most common causes of a P0303 code, how it will affect your drive, and what you need to do to fix it.

P0303 Misfire Code: Symptoms, Causes, and How to Fix It Drivers notice a sudden, uneven rhythm when the engine runs. The idle may feel “shaky,” and the vehicle can lose a noticeable amount of …

Jan 18, 2025 · What does the P0303 Cylinder-3 Misfire Detected mean? P0303 code gets triggered when the Engine Control Module detects an engine misfire on cylinder-3. Misfire means that the …

This guide explains the P0303 code’s meaning, symptoms, causes, and step-by-step diagnostics to fix it like a pro—potentially saving you $500-$800 from overpriced cylinder misfire repairs.

Oct 30, 2024 · Here's everything you need to know if your engine is showing the P0303 error code, which indicates that the engine control module has identified a misfire in cylinder 3. Here are the …

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model.