Sep 7, 2024 · How to fix the P0304 code fast and prevent further engine damage? Discover essential steps to resolve cylinder 4 misfire effectively.

Discover the common causes of the P0304 diagnostic trouble code and learn how to troubleshoot a misfire in cylinder 4 of your engine.

The P0304 code means that cylinder 4 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 cylinder 4.

Oct 6, 2025 · If your car's ECM throws a P0304 trouble code, you have a misfire problem. Here are common symptoms, causes, and how to fix DTC P0304...

Nov 29, 2024 · When your vehicle throws a P0304 code, it often reveals itself through several noticeable symptoms. One of the first things you’ll likely experience is a rough idle. The engine …

Jul 8, 2024 · Like all misfire-related codes (P03XX), P0304 is serious and requires immediate attention. Failing to take action right away can affect safety and engine performance and …

When the vehicle’s PCM/ECM notices an engine misfire, it sets up a particular trouble code. The engine code P0304 represents a misfiring in cylinder 4. This article mainly explains the P0304 …

This guide explains the P0304 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.

May 27, 2024 · The P0304 code indicates a misfire in cylinder 4. Read on to learn its symptoms, possible causes, as well as how to diagnose and fix the underlying issue.

What does the P0304 code mean? The P0304 code signifies a cylinder 4 misfire detected by your vehicle’s onboard diagnostics system. When this code appears, it indicates that the engine …