Quick answer
By the ASE-certified team at On-Site Mobile Mechanics of Dallas · 12 years repairing cars across Dallas–Fort Worth
Misfire codes P0300–P0308 point to a cylinder. Coils, plugs, injectors, vacuum leaks and low compression are tested in that order.
A $150–$400 coil-and-plug repair can become a $1,200–$2,500 catalytic converter replacement if you keep driving.
Only short distances to safety or a mechanic.
It may go solid when the misfire lessens, but the problem remains.
Yes, most misfires are repaired on-site by a mobile mechanic.
What that orange light means, common codes, and when it's urgent.
Typical mobile mechanic prices in Dallas–Fort Worth, by repair, and what affects the final bill.
When a solid check engine light can wait and when you should pull over.
Same-day mobile auto repair across Dallas–Fort Worth.
