Ignition and misfires

P0351 Fault in the cylinder 1 ignition coil

By: Diagno editorial team · Updated: 2026-10-15

P0351 means: Fault in the cylinder 1 ignition coil. The engine computer can't control the ignition coil properly. Don't drive until the car has been checked. The engine could be damaged. The most common repair costs about €90–180 in Estonia, depending on make and model.

Is it safe to drive?Don't driveDon't drive until the car has been checked. The engine could be damaged.

Ignition coil replacement€90–180parts and labour in Estonia, depending on make and model

What it means

The engine computer can't control the ignition coil properly. That cylinder will misfire.

What could be wrong

1Ignition coil has failed · Ignition coil replacement €90–180
2Coil connector or wire · Wiring or connector repair €45–90
3Worn spark plug overloading the coil · Spark plug replacement €60–120

What you can check yourself

Swap the coil with the neighbouring cylinder and see whether the fault moves with it. You can do the simpler checks yourself.

How we fix it

We check the coil and its wiring
We replace the ignition coil
We also replace the spark plugs if they are old

Standard SAE description: Ignition Coil A Primary/Secondary Circuit

This code usually comes with: Check engine lightSee what the light means →

Related symptoms: Car shaking or jerking

Want a definite answer?

Bring the car to our workshop in Estonia for diagnostics. We read the fault codes, test the sensors and tell you what is wrong. Repair price depends on the work involved, generally €45 per hour.

Book a diagnostic check

Questions

What does fault code P0351 mean?

Fault in the cylinder 1 ignition coil. The engine computer can't control the ignition coil properly. That cylinder will misfire.

Can I drive with code P0351?

Don't drive until the car has been checked. The engine could be damaged.

How much does it cost to fix P0351?

It depends on the cause: ignition coil replacement €90–180; wiring or connector repair €45–90; spark plug replacement €60–120. Prices include labour at €45/h, depending on make and model.

How is P0351 fixed?

We check the coil and its wiring. We replace the ignition coil. We also replace the spark plugs if they are old.

Based on AI combined with our hands-on workshop experience and knowledge. This information is general and prices are approximate (Estonian workshop rates). The same code can mean different things on different cars. Only an inspection of the car gives a definite answer.