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Fault code P0302 means misfires on cylinder 2. Irregular combustion localised on the second cylinder.

Typical symptoms

• Vibration at idle
• Jerking under acceleration
• Engine light on or flashing

Most common causes

• Cylinder 2 spark plug or coil
• Injector out of tolerance
• Insufficient compression
• Faulty connector or wiring

How it is checked in diagnosis

• Swapping components between cylinders
• Cylinder compression and leak-down
• Reading the misfire counter

Can you drive with code P0302?

With a flashing light no, to avoid damaging the catalytic converter.

How MasterTuning helps

We read the real values from the ECU, not just the code: that is the difference between identifying the component responsible and replacing parts by trial and error. After the repair we clear the fault and check that it does not come back. Centres throughout Italy.

Read more: vehicle database · find an installer · what is ECU remapping

Do you have code P0302 on your car? Book a diagnosis at your nearest MasterTuning centre.

Frequently asked questions

What does fault code P0302 mean?

Code P0302 means misfires on cylinder 2. Irregular combustion localised on the second cylinder.

Can you drive with fault P0302?

With a flashing light no, to avoid damaging the catalytic converter.

Is clearing code P0302 enough to fix it?

No: if the cause is still present the code comes back after a few kilometres. Clearing should only be done after the repair, with the diagnostic tool.

How much does it cost to fix code P0302?

It depends on the component responsible: the diagnosis is precisely what identifies it with real measurements, avoiding unnecessary replacements that cost far more than the correct repair.