Cylinder 2 Misfire Detected

What is P0302?

P0302 is a critical powertrain code indicating the engine's computer has detected a misfire specifically in cylinder 2. This means the air/fuel mixture in that cylinder is not burning properly, which can cause severe engine damage and trigger limp mode. Based on owner reports, this is a serious issue often linked to major engine components, with an average repair cost of $4635.

Common Causes

• ●Head gasket failure, specifically mentioned by a Honda Accord owner as the likely cause for misfires on cylinders 1 and 2
• ●Ignition system component failure (spark plugs, coils, or wires)
• ●Fuel delivery issues to cylinder 2 (injector or fuel pressure problems)
• ●Mechanical engine problems like low compression or valve issues

Symptoms You May Notice

• ●Engine runs rough or shakes, especially at idle
• ●Loss of power and reduced acceleration
• ●Check Engine Light is illuminated, often flashing
• ●Vehicle may enter a protective 'limp mode' to prevent damage, as reported by a Honda Accord owner

How to Fix It

• ●Head gasket replacement ($2000-$4800, high difficulty) - this was the suspected repair for a Honda Accord with this exact code
• ●Spark plug and ignition coil replacement on cylinder 2 ($150-$600, moderate difficulty)
• ●Fuel injector replacement for cylinder 2 ($300-$1200, moderate difficulty)
• ●Complete engine diagnostic and compression test ($100-$300, moderate difficulty)