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Engine-Codes – MINI – P1301 MINI

P1301 MINI Code - Misfiring Cylinder 1

Quick Answer

The P1301 MINI diagnostic trouble code indicates a misfire in cylinder 1 of the engine. Common causes include Faulty spark plugs, Failing ignition coil, Clogged or malfunctioning fuel injector. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1301 MINI indicates Misfiring Cylinder 1.
Common causes
Common causes include Faulty spark plugs, Failing ignition coil, Clogged or malfunctioning fuel injector.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P1301 MINI Description

The P1301 MINI diagnostic trouble code indicates a misfire in cylinder 1 of the engine. A misfire occurs when the fuel-air mixture in the cylinder fails to ignite at the proper time, causing a disruption in the combustion process. This can lead to a variety of issues, including reduced engine performance, decreased fuel efficiency, and potential damage to the catalytic converter.

OBDII Code P1301 MINI - Misfiring Cylinder 1
P1301 MINI Code - Misfiring Cylinder 1

Common Causes of P1301 MINI

  1. Faulty spark plugs
  2. Failing ignition coil
  3. Clogged or malfunctioning fuel injector
  4. Low compression in cylinder 1
  5. Vacuum leak or intake manifold gasket leak

Symptoms of P1301 MINI

  1. Rough idling
  2. Loss of power
  3. Hesitation or jerking during acceleration
  4. Check Engine Light illuminated
  5. Decreased fuel efficiency

How to Fix P1301 MINI

  1. Diagnose the specific cause of the misfire by performing a thorough inspection of the spark plugs, ignition coils, fuel injectors, and compression in cylinder 1.
  2. Replace any faulty components such as spark plugs, ignition coils, or fuel injectors.
  3. Perform a compression test to ensure proper compression in cylinder 1.
  4. Check for vacuum leaks and intake manifold gasket leaks, repairing or replacing as necessary.
  5. Clear the trouble code and test drive the vehicle to ensure the misfire has been resolved.

Cost to Fix P1301 MINI

The cost of repairing a misfiring cylinder 1 can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair could range from $100 to $500 or more, including parts and labor. It is advisable to consult with a mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates can vary, so it is recommended to shop around for the best price.

What does this mean?

Tech Notes for P1301 MINI

Ignition monitoring cylinder spark duration too short

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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