Drive DTCP0306 – Cylinder 6 is misfiring
Cylinder 6 misfire detected
Ignition and misfires · generic OBD-II code
Drive it only if you have to, gently and not far. Get it fixed right away.
Check this first
If the check engine light is flashing, stop driving – a misfire quickly ruins the catalytic converter.
What usually fixes it
In the order a good shop checks them. Typical total: $81–$3,975 at $130 an hour.
Spark plug
The cheapest thing that misfires, and the most likely.
Ignition coil
Swap the coil with the one next door – if the misfire moves, that's your answer.
Fuel injector
A blocked or leaking injector on that cylinder.
Compression problem
A burnt valve or worn rings – a compression test tells you.
What the vehicle can tell you itself
A stored code is a headline, not the story. The vehicle also holds the conditions when it happened, how close the part is to the limit it fails at, what the fuel trims are doing, and whether the fault is still happening right now. Drive DTC reads all of it with a USB adapter and a Windows PC – and it can't change a single setting on the vehicle.
See what your vehicle says about P0306
Codes in plain English, what usually causes them, what the repair costs, and whether it's safe to drive.