FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
my Ford F-150 13th Generation (2015-2020) has a check engine light and a misfire - Ford F-150
Home/Cars/Ford/F-150/13th Generation (2015-2020)/my Ford F-150 13th Generation (2015-2020) has a check engine light and a misfire

my Ford F-150 13th Generation (2015-2020) has a check engine light and a misfire

Ford F-150 13th Generation (2015-2020)

Error Codes
2-4 hours
Time
medium
Difficulty
high
Severity
Error Code: P0300-P0306
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
520 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 P0300-P0306 engine misfire in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0300-P0306
Affected Component
Engine
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect battery before working on electrical systems
  • •Allow engine to cool before attempting to remove engine components

Symptoms

  • •Check engine light illuminated
  • •Engine misfire or rough idle
  • •Decreased acceleration or power
  • •Increased fuel consumption
  • •Unusual exhaust emissions or odor

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

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
  • •Spark plug socket
  • •Ratchet
  • •Torque wrench
  • •Gap gauge
  • •Fuel injector cleaning kit
  • •Screwdrivers
  • •Pliers

Parts Required

  • •Spark plugs
  • •Ignition coils (if needed)
  • •Fuel injectors (if needed)

Additional Information

Error Code
P0300-P0306
Affected Component
Engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
high
Tools Required
8 items
Parts Required
3 items

Related Faults

Loading...

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
Solution
1. Preparation
  • Gather necessary tools and parts before starting.
  • Ensure the vehicle is parked on a flat surface and the engine is cool.
  • Disconnect the negative battery terminal to prevent electrical shorts.
2. Replace Spark Plugs
  • Tools Required: Spark plug socket, ratchet, torque wrench, gap gauge.
  • Remove the ignition coil cover if applicable.
  • Disconnect the electrical connector from each ignition coil.
  • Remove the ignition coils by unscrewing them.
  • Use the spark plug socket to remove old spark plugs.
  • Check the gap on new spark plugs using a gap gauge and adjust if necessary.
  • Install new spark plugs and torque to manufacturer specifications (typically 13-15 lb-ft).
  • Reattach the ignition coils and connectors.
3. Inspect and Replace Ignition Coils (if necessary)
  • If any ignition coils show signs of wear or damage during inspection, replace them.
  • Remove the faulty coil as described in the previous step.
  • Install the new ignition coil and reconnect the electrical connector.
4. Check and Replace Fuel Injectors (if necessary)
  • Use a fuel injector cleaning kit to flush out any debris if injectors are clogged.
  • If injectors are faulty, remove them using a fuel injector removal tool.
  • Install new fuel injectors ensuring O-rings are properly seated.
5. Reassemble and Reconnect Battery
  • Reinstall any components removed during the repair.
  • Reconnect the negative battery terminal.
  • Ensure all tools and parts are accounted for.