Cylinder 10 Misfire Detected

What it means

The engine computer has detected repeated misfires in cylinder 10; this code only appears on engines with ten or more cylinders. The causes are the same as for any cylinder: spark plug, ignition coil, injector or low compression.

Related codes: P0300P0309P0311P0316

Symptoms4

• Slight stumble at idle or at low speeds.
• Slightly weaker throttle response.
• Check engine light on or flashing.
• Fuel smell from the exhaust.

Possible causes6

• Worn or fouled spark plug in cylinder 10.
• Weak ignition coil for cylinder 10.
• Faulty or clogged injector for this cylinder.
• Heat damage to the wiring or connector.
• Vacuum leak near the cylinder 10 intake runner.
• Low compression in the cylinder (less common).

How to diagnose5

1. Locate cylinder 10 in the service manual; it is usually at the end of one bank.
2. Watch the misfire counter and compare it with cylinder 9 and the rest of the bank.
3. Inspect the plug, then swap the coil with another cylinder and see whether the misfire moves.
4. Check the injector and its connector.
5. Have a compression test done if ignition and fuel check out.

How to fix6

1. Replace the spark plug, or the full set if it is due.
2. Replace the ignition coil the misfire followed.
3. Repair damaged wiring or connectors.
4. Clean or replace the injector.
5. Repair the cause of low compression if confirmed.
6. Clear the codes, test drive and confirm the code does not return.

Repair cost

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost starts with a plug or coil and rises on these large engines because of parts prices and access labor, especially if an injector is needed.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions