FAULTBASE
NEWSASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Ford/F-150/Fourteenth Generation (2021-present)/how to fix P0301 code on Ford F-150 Fourteenth Generation (2021-present)

how to fix P0301 code on Ford F-150 Fourteenth Generation (2021-present)

Ford F-150 Fourteenth Generation (2021-present)

Severity: highDifficulty: mediumError Code: P03012-4 hours
3 min read
537 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix P0301 cylinder 1 misfire in Ford F-150. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0301
Component
Engine
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical components.
  • ⚠Allow the engine to cool before working on or removing components related to the ignition system.

Symptoms

  • •Check engine light illuminated
  • •Rough idle or engine shaking
  • •Decreased engine power and acceleration
  • •Increased fuel consumption
  • •Possible engine stalling or hesitation

Diagnostic Steps

  1. 1Scan the vehicle using an OBD-II scanner to confirm the P0301 code and check for any additional codes.
  2. 2Inspect the ignition coil and spark plug for cylinder 1 for wear or damage.
  3. 3Check the fuel injector for cylinder 1 for proper operation and fuel delivery.
  4. 4Conduct a compression test on cylinder 1 to evaluate engine health.
  5. 5Inspect vacuum lines for any leaks that may affect the air-fuel mixture.
  6. 6Examine the engine control module (ECM) for software updates or issues.

Solution

Solution

1. Preparation

  • Gather all necessary tools and parts.
  • Park the vehicle on a flat surface and engage the parking brake.
  • Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

  • Remove the ignition coil from cylinder 1:
    • Disconnect the electrical connector.
    • Remove the mounting bolt using a socket set.
  • Extract the spark plug using a spark plug socket:
    • Inspect the spark plug for wear or carbon buildup.
    • Replace with a new spark plug if damaged.
  • Reinstall the ignition coil onto the new spark plug and reconnect the electrical connector.

3. Check and Replace Ignition Coil (if needed)

  • If the ignition coil shows damage or wear during inspection:
    • Remove the ignition coil from cylinder 1 as previously described.
    • Install a new ignition coil, ensuring it is seated properly.
    • Reconnect the electrical connector.

4. Test Fuel Injector

  • Remove the fuel injector for cylinder 1:
    • Disconnect the fuel line and electrical connector.
    • Unbolt the injector from the intake manifold.
  • Test the fuel injector operation using a multimeter:
    • Replace with a new injector if it fails to operate correctly.
  • Reinstall the new injector and reconnect all lines.

5. Reassemble and Connect Battery

  • Ensure all components are securely fastened and all connections are re-established.
  • Reconnect the negative terminal of the battery.

Verification

After completing the repair, verify that the issue has been resolved:

  • Test the affected component to ensure it functions correctly
  • Check for any error codes or warning lights
  • Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • OBD-II scanner
  • Socket set
  • Torque wrench
  • Spark plug socket
  • Multimeter

Parts Required

  • Spark plug(s)
  • Ignition coil (if necessary)
  • Fuel injector (if necessary)

Additional Information

Error CodeP0301
Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

5 items

Parts

3 items

Related Faults

Discover similar issues

  1. why does my Ford F-150 battery light come on randomly

    Learn how to diagnose and fix the intermittent battery light issue in your Ford F-150. Step-by-step guide with diagnostic procedures and repair instru...

    Component:Electrical
    Symptoms
    • •Battery light on the dashboard illuminated
    • •Engine stalling or difficulty starting
    • +{count} more

  2. how to troubleshoot battery charging issues in my Ford F-150 Fourteenth Generation (2021-present)

    Learn how to troubleshoot battery charging issues in your Ford F-150 (2021-present). Step-by-step guide with symptoms, diagnostic steps, and solutions...

    Component:Electrical
    Symptoms
    • •Check engine light illuminated
    • •Battery warning light on the dashboard
    • +{count} more

  3. my Ford F-150 AC compressor runs but doesn’t cool, what might be wrong?

    Learn how to diagnose and fix AC issues in Ford F-150. Step-by-step guide with symptoms, diagnostic steps, tools, and repair instructions.

    Component:HVAC
    Symptoms
    • •Compressor engages but does not produce cold air
    • •Warm air blows from the vents
    • +{count} more

  4. how can I fix my Ford F-150 that won’t engage the AC compressor clutch?

    Learn how to diagnose and fix the AC compressor clutch not engaging in Ford F-150. Step-by-step guide with diagnostic procedures and repair instructio...

    Component:HVAC
    Symptoms
    • •AC compressor clutch does not engage
    • •No cold air from the AC vents
    • +{count} more

  5. how to fix the temperature blend door actuator in my Ford F-150 Fourteenth Generation (2021-present)

    Learn how to fix the temperature blend door actuator in your Ford F-150 (2021-present). Step-by-step guide with symptoms, diagnostic steps, and repair...

    Component:HVAC
    Symptoms
    • •Inconsistent cabin temperature
    • •No hot air blowing from the vents
    • +{count} more

  6. my Ford F-150’s engine overheats at idle, what is causing this

    Learn how to diagnose and fix engine overheating at idle in Ford F-150. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Component:Cooling System
    Symptoms
    • •Engine temperature gauge indicates high readings
    • •Coolant warning light illuminated
    • +{count} more

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation