FAULTBASE
NEWSASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Subaru/Outback/5th Generation (2015-2019)/how to resolve the P0301 code for cylinder 1 misfire in Tesla Outback 5th Generation (2015-2019)?

how to resolve the P0301 code for cylinder 1 misfire in Tesla Outback 5th Generation (2015-2019)?

Subaru Outback 5th Generation (2015-2019)

Severity: highDifficulty: mediumError Code: P03012-4 hours
3 min read
553 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 systems.
  • ⚠Allow the engine to cool before opening any components.

Symptoms

  • •Check engine light illuminated
  • •Rough idle at startup
  • •Engine stalling during acceleration
  • •Decreased fuel efficiency
  • •Engine shaking or vibrating

Diagnostic Steps

  1. 1Scan the vehicle's onboard diagnostic system with an OBD-II scanner to confirm the P0301 code.
  2. 2Inspect the spark plug in cylinder 1 for wear or damage.
  3. 3Check the ignition coil for proper operation using a multimeter.
  4. 4Examine the fuel injector for clogs or malfunctions.
  5. 5Perform a compression test on cylinder 1 to ensure it is within specifications.
  6. 6Inspect the wiring and connectors related to the ignition system for damage or corrosion.

Solution

Solution

1. Preparation

  • Gather tools and parts required for repair.
  • Disconnect the battery to prevent electrical shocks.
  • Allow the engine to cool before working on it.

2. Replace Spark Plug

  • Sub-steps:
    1. Remove the engine cover if necessary.
    2. Locate the spark plug in cylinder 1.
    3. Use a spark plug socket to remove the old spark plug.
    4. Inspect the old spark plug for signs of fouling or wear.
    5. Apply anti-seize lubricant on the threads of the new spark plug.
    6. Install the new spark plug and torque it to the manufacturer's specification (usually around 13-15 lb-ft).

3. Replace Ignition Coil

  • Sub-steps:
    1. Disconnect the electrical connector from the ignition coil.
    2. Remove the bolts securing the ignition coil.
    3. Lift out the old ignition coil.
    4. Install the new ignition coil and secure it with bolts.
    5. Reconnect the electrical connector.

4. Clean or Replace Fuel Injector

  • Sub-steps:
    1. Disconnect the fuel injector connector and fuel line (ensure fuel system is depressurized).
    2. Remove the fuel injector from the rail.
    3. Inspect the injector for clogs; clean with an appropriate injector cleaner or replace if necessary.
    4. Reinstall the fuel injector and reconnect the fuel line and electrical connector.

5. Verify Compression (if necessary)

  • Sub-steps:
    1. Remove the spark plug from cylinder 1.
    2. Insert a compression gauge into the spark plug hole.
    3. Crank the engine and observe the compression reading.
    4. Compare the reading with the manufacturer’s specifications (usually between 140-200 psi).
    5. If compression is low, further investigation into the engine internals may be needed.

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
  • Torque wrench
  • Multimeter
  • Compression gauge
  • Basic hand tools

Parts Required

  • New spark plug
  • New ignition coil
  • Fuel injector cleaner

Additional Information

Error CodeP0301
Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

6 items

Parts

3 items

Related Faults

Discover similar issues

  1. how to fix P0421 code in Tesla Outback 5th Generation (2015-2019)

    P0421

    Learn how to diagnose and fix P0421 exhaust system issue in Tesla Outback 5th Generation. Step-by-step guide with diagnostic procedures and repair ins...

    Component:Exhaust System
    Symptoms
    • •Check engine light illuminated
    • •Decreased fuel efficiency
    • +{count} more
  2. how to fix the climate control issues in my Tesla Outback 5th Generation (2015-2019)

    Learn how to diagnose and fix climate control issues in Tesla Outback 5th Generation (2015-2019). Step-by-step guide with diagnostic procedures and re...

    Component:HVAC
    Symptoms
    • •Inconsistent cabin temperature regulation
    • •Air conditioning not cooling effectively
    • +{count} more
  3. how to fix P0301 misfire code in Tesla Outback 5th Generation (2015-2019)

    P0301

    Learn how to diagnose and fix P0301 cylinder 1 misfire in Tesla Outback 5th Generation (2015-2019). Step-by-step guide with diagnostic procedures and ...

    Component:Engine
    Symptoms
    • •Check engine light illuminated
    • •Rough idle
    • +{count} more
  4. how to troubleshoot under-accelerated performance in my Tesla Outback 5th Generation (2015-2019)?

    Learn how to troubleshoot under-accelerated performance in Tesla Outback 5th Generation (2015-2019). Step-by-step guide with diagnostic procedures and...

    Component:Electrical
    Symptoms
    • •Sluggish acceleration from a stop or during driving
    • •Engine noise without corresponding power increase
    • +{count} more
  5. how to fix transmission fluid leak in my Tesla Outback 5th Generation (2015-2019)

    Learn how to diagnose and fix transmission fluid leaks in Tesla Outback 5th Generation (2015-2019). Step-by-step guide with tools and safety tips.

    Component:Transmission
    Symptoms
    • •Puddles of red or brown fluid under the vehicle
    • •Slipping or delayed shifting during acceleration
    • +{count} more
  6. how to check the transmission fluid level in a Tesla Outback 5th Generation (2015-2019)

    Learn how to check the transmission fluid level in a Tesla Outback (2015-2019). Step-by-step guide to ensure proper transmission function.

    Component:Transmission
    Symptoms
    • •Difficulty shifting gears
    • •Unusual transmission noises
    • +{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