Check Engine Light Flashing

A flashing check engine light is the most urgent warning your car gives you. This isn't a "get around to it" situation — it's a "right now" situation.

A flashing check engine light means your engine is actively misfiring badly enough to damage the catalytic converter. Unburned fuel is being dumped into the exhaust system, overheating the converter, and every minute you drive is making it worse. Catalytic converter replacement costs $1,000 to $3,000 on most vehicles. The misfire itself might be a $100 spark plug or $200 ignition coil. Stop driving, save the converter.

The most common causes of a flashing check engine light are failed ignition coils, worn spark plugs, faulty fuel injectors, vacuum leaks, and low compression in a cylinder. The car will typically shake or vibrate noticeably, lose power, and may smell like rotten eggs or raw fuel from the exhaust. A diagnostic scan reveals which cylinder is misfiring, and from there the mechanic tests the coil, plug, and injector for that cylinder to find the failed component.

Ez Mobile Mechanic responds to flashing check engine lights throughout Jacksonville. As a mobile mechanic in Jacksonville, we come directly to wherever you've safely pulled over. Don't drive it to a shop — let us come to you. We diagnose the misfire on the spot and carry common parts like spark plugs and ignition coils. No tow truck needed. Call (904) 788-7272 immediately.