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Home/Cars/Subaru/Outback/4th Generation (2010-2014)/how to fix P0302 code on Tesla Outback 4th Generation (2010-2014)

how to fix P0302 code on Tesla Outback 4th Generation (2010-2014)

Subaru Outback 4th Generation (2010-2014)

Severity: highDifficulty: mediumError Code: P03022-4 hours
3 min read
583 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 P0302 cylinder 2 misfire in Tesla Outback (2010-2014). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0302
Component
Engine
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool before removing components.

Symptoms

  • •Check engine light illuminated
  • •Rough idle or shaking during operation
  • •Loss of power during acceleration
  • •Increased fuel consumption
  • •Engine stalling or hesitation

Diagnostic Steps

  1. 1Scan the vehicle's OBD-II system for error codes and confirm P0302 is present.
  2. 2Inspect spark plug and ignition coil for cylinder 2 for signs of wear or damage.
  3. 3Check engine compression on cylinder 2 to rule out mechanical issues.
  4. 4Examine fuel injector operation on cylinder 2 using a noid light or similar tool.
  5. 5Inspect the wiring and connectors related to the ignition coil and fuel injector for any damage or corrosion.
  6. 6Perform a visual inspection of vacuum hoses and intake manifold gaskets for leaks.

Solution

Solution

1. Preparation

  • Gather tools and parts required.
  • Park the vehicle on a level surface and engage the parking brake.
  • Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Spark Plug

  • Tools Required: Socket set, torque wrench.
  • Remove the ignition coil from cylinder 2 by unscrewing the bolts and disconnecting the electrical connector.
  • Remove the spark plug using a spark plug socket. Inspect for wear, carbon buildup, or damage.
  • If damaged, replace with a new spark plug, ensuring it is gapped according to manufacturer specifications (typically around 0.044 inches for most models).
  • Reinstall the ignition coil and secure it with the bolts. Reconnect the electrical connector.

3. Test and Replace Ignition Coil (if necessary)

  • If the spark plug is in good condition, test the ignition coil using a multimeter.
  • Tools Required: Multimeter.
  • Measure the resistance across the primary and secondary terminals of the coil. Compare readings to manufacturer specifications.
  • If the coil is faulty, replace it with a new ignition coil specific to cylinder 2.
  • Reconnect the coil after replacement.

4. Inspect and Clean Fuel Injector

  • If the ignition system is functioning correctly, inspect the fuel injector for cylinder 2.
  • Use a fuel injector cleaning kit to clean the injector if it is clogged or malfunctioning.
  • If cleaning does not resolve the issue, replace the fuel injector.

5. Reassemble and Reconnect Battery

  • Ensure all components are securely reinstalled.
  • Reconnect the battery terminals, ensuring a solid connection.

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
  • Multimeter
  • Fuel injector cleaning kit

Parts Required

  • Spark plug (for cylinder 2)
  • Ignition coil (if necessary)
  • Fuel injector (if necessary)

Additional Information

Error CodeP0302
Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

5 items

Parts

3 items

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