P0311 — Cylinder 10 Misfire Detected
Drivable short-term, but fix now to avoid damage.
What P0311 means
This code means the engine computer detected a misfire in cylinder 10, meaning that cylinder isn't burning its fuel-air mixture properly. Typical causes are worn spark plugs, a failing ignition coil, injector problems, or low compression in that cylinder. Repairs usually start with new spark plugs and coils, and it's a common fix that doesn't always require major engine work.
Common symptoms
- Check engine light is on or flashing
- Rough idle or engine shaking
- Reduced power on acceleration
- Engine hesitates or misses
- Lower fuel economy
Common causes
- Worn or fouled spark plug on cylinder 10
- Faulty ignition coil for cylinder 10
- Clogged or failing fuel injector
- Vacuum leak or low compression in the cylinder
- Damaged spark plug wires or connectors
Typical repair cost
$150 – $1200
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0311 code?
Only for a short trip if necessary. A misfire can damage your catalytic converter and escalate quickly, especially with a flashing light. Get it diagnosed right away.
How much does it cost to fix a P0311 code?
Most repairs cost between $150 and $1,200. Spark plug or coil replacement is on the lower end, while injector or compression issues raise the price.
Is a P0311 code serious?
Yes. A misfire lowers performance, wastes fuel, and can ruin expensive emissions parts if ignored. A flashing check engine light makes it more pressing.
Does P0311 mean my engine is permanently damaged?
Not usually. Most cases come from a worn plug, coil, or injector and are repairable. Lasting damage typically only happens if a strong misfire is ignored for a long time.