FAULTBASE
NEWSASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Subaru/Outback/5th Generation (2015-2019)/how to fix P0301 code in Tesla Outback 5th Generation (2015-2019)

how to fix P0301 code in Tesla Outback 5th Generation (2015-2019)

Subaru Outback 5th Generation (2015-2019)

Severity: highDifficulty: mediumError Code: P03012-4 hours
3 min read
582 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 Tesla Outback 5th Generation. 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 opening any components to prevent burns.

Symptoms

  • •Check engine light illuminated
  • •Rough idle or engine shaking
  • •Loss of power during acceleration
  • •Poor fuel economy
  • •Increased exhaust emissions
  • •Engine stalling or hesitation

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm the P0301 code.
  2. 2Inspect the ignition system components, including spark plugs and ignition coils.
  3. 3Check for vacuum leaks around the intake manifold and throttle body.
  4. 4Test the fuel injector for cylinder 1 for proper operation.
  5. 5Use a multimeter to check the resistance of the ignition coil.
  6. 6Conduct a compression test on cylinder 1 to assess the engine's mechanical condition.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Disconnect the negative battery terminal to ensure safety.
  • Allow the engine to cool completely before starting work.

2. Inspect and Replace Spark Plug

  • Remove the engine cover if necessary.
  • Disconnect the ignition coil connector from the spark plug.
  • Use a spark plug socket and ratchet to remove the spark plug from cylinder 1.
  • Inspect the spark plug for wear or damage; replace it if necessary.
  • Install the new spark plug, torque to manufacturer specifications (typically 13-15 ft-lbs).
  • Reconnect the ignition coil connector.

3. Inspect and Replace Ignition Coil

  • If the spark plug is in good condition, remove the ignition coil from cylinder 1 by unscrewing the retaining bolts.
  • Inspect the coil for cracks or damage; replace it if necessary.
  • Install the new ignition coil and torque to manufacturer specifications (typically 10-12 ft-lbs).
  • Reconnect the ignition coil connector.

4. Test Fuel Injector

  • Disconnect the fuel injector connector for cylinder 1.
  • Use a multimeter to check if the injector is receiving power.
  • If no power is detected, inspect the wiring for damage or corrosion.
  • If power is present, use a noid light to confirm the injector is functioning.
  • Replace the injector if it is faulty.

5. Check for Vacuum Leaks

  • Visually inspect all vacuum lines connected to the intake manifold.
  • Use a smoke machine or carburetor cleaner to check for leaks around the intake manifold and throttle body.
  • Replace any damaged vacuum lines or gaskets found during inspection.

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 and socket set
  • Multimeter
  • Torque wrench
  • Screwdrivers

Parts Required

  • Spark plug (for cylinder 1)
  • Ignition coil (for cylinder 1)
  • Fuel injector (if necessary)
  • Vacuum hoses or intake gaskets (if necessary)

Additional Information

Error CodeP0301
Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

6 items

Parts

4 items

Related Faults

Discover similar issues

  1. how to reset the tire pressure light on Tesla Outback 5th Generation (2015-2019)

    Learn how to reset the tire pressure light on Tesla Outback (2015-2019). Step-by-step guide for troubleshooting and fixing TPMS issues.

    Component:Electrical
    Symptoms
    • •Tire pressure warning light illuminated on the dashboard
    • •Possible alerts regarding low tire pressure on the display
    • +{count} more
  2. how to reset the service light on Tesla Outback 5th Generation (2015-2019)

    Learn how to reset the service light on Tesla Outback 5th Generation (2015-2019) with this step-by-step guide. Ensure your vehicle is ready for the ro...

    Component:Electrical
    Symptoms
    • •Service light illuminated on the dashboard
    • •Possible warning messages related to maintenance
    • +{count} more
  3. how to fix the transmission fluid leak in my Tesla Outback 5th Generation (2015-2019)

    Learn how to diagnose and fix a transmission fluid leak in your Tesla Outback 5th Generation. Step-by-step guide with tools and parts required.

    Component:Transmission
    Symptoms
    • •Transmission warning light illuminated
    • •Low transmission fluid level
    • +{count} more
  4. how to diagnose CVT overheating issues in my Tesla Outback 5th Generation (2015-2019)

    Learn how to diagnose and fix CVT overheating issues in Tesla Outback 5th Generation. Step-by-step guide with symptoms, diagnostic steps, and repair i...

    Component:Transmission
    Symptoms
    • •Check engine light illuminated
    • •Slipping or delayed acceleration
    • +{count} more
  5. why does my Tesla Outback 5th Generation (2015-2019) battery die when the car is off

    Learn how to diagnose and fix battery drain issues in Tesla Outback 2015-2019. Step-by-step guide with diagnostic procedures and repair instructions.

    Component:Electrical
    Symptoms
    • •Battery drain occurs overnight or after extended periods of inactivity
    • •"Low Battery" warning on the dashboard when attempting to start
    • +{count} more
  6. how to fix the shuddering torque converter in Tesla Outback 5th Generation (2015-2019)

    Learn how to diagnose and fix shuddering torque converter issues in Tesla Outback 2015-2019. Step-by-step guide with symptoms, diagnostics, and repair...

    Component:Transmission
    Symptoms
    • •Shuddering or vibrating sensation during acceleration
    • •Engine RPM fluctuations
    • +{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