FAULTBASE
NEWSASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Tesla/Model 3/Highland (2024-present)/how to fix P0302 code on Tesla Model 3 Highland (2024-present)

how to fix P0302 code on Tesla Model 3 Highland (2024-present)

Tesla Model 3 Highland (2024-present)

Severity: highDifficulty: mediumError Code: P03022-4 hours
3 min read
575 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 Model 3 Highland. 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 components.
  • ⚠Allow the engine to cool completely before removing any engine components.

Symptoms

  • •Check engine light illuminated
  • •Rough engine idle
  • •Poor acceleration or loss of power
  • •Increased fuel consumption
  • •Engine stalling or hesitation during acceleration

Diagnostic Steps

  1. 1Scan the vehicle using an OBD-II scanner to confirm the P0302 code and check for any additional codes.
  2. 2Inspect the ignition coils and spark plugs for damage or wear, specifically in cylinder 2.
  3. 3Check the fuel injector for cylinder 2 for clogs or malfunction.
  4. 4Perform a compression test on cylinder 2 to determine if there are any mechanical issues.
  5. 5Inspect wiring and connections related to the ignition system and fuel injector.
  6. 6Test the battery voltage to ensure proper electrical supply to the ignition system.

Solution

Solution

1. Preparation

  • Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, compression tester.
  • Ensure the car is parked on a flat surface and the engine is cool.
  • Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect and Replace Spark Plug

  • Tools Required: Socket set, torque wrench.
  • Remove the engine cover if applicable.
  • Locate the spark plug for cylinder 2.
  • Use a socket wrench to unscrew the spark plug.
  • Inspect for wear or deposits; clean or replace if necessary.
  • If replacing, torque to manufacturer specifications (usually around 12-15 ft-lbs).

3. Inspect and Replace Ignition Coil

  • Tools Required: Socket set.
  • Remove the ignition coil for cylinder 2 by unscrewing it from the cylinder head.
  • Inspect for cracks or damage; replace if necessary.
  • Install the new ignition coil and secure it with screws.

4. Check and Clean Fuel Injector

  • Tools Required: Socket set, fuel injector cleaning kit (if necessary).
  • Disconnect the fuel injector connector for cylinder 2.
  • Remove the fuel injector from its rail.
  • Inspect for clogs; clean or replace if necessary.
  • Reinstall the fuel injector and reconnect the connector.

5. Perform Compression Test

  • Tools Required: Compression tester.
  • Remove the spark plug from cylinder 2.
  • Insert the compression tester into the spark plug hole.
  • Crank the engine to take the compression reading.
  • Compare the reading to manufacturer specifications; low readings may indicate internal engine issues.

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
  • Compression tester

Parts Required

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

Additional Information

Error CodeP0302
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 Tesla Model 3 Highland (2024-present) make a beeping sound when I park

    Discover why your Tesla Model 3 Highland beeps when parking and how to resolve it. Step-by-step guide for diagnosing and fixing the issue.

    Component:Electrical
    Symptoms
    • •Beeping sound occurs during parking
    • •Possible visual alerts on the dashboard
    • +{count} more
  2. how to diagnose a misfire in my Tesla Model 3 Highland (2024-present)

    Learn how to diagnose and fix misfire issues in Tesla Model 3 Highland (2024-present). Step-by-step guide with diagnostic procedures and repair instru...

    Component:Electrical
    Symptoms
    • •Loss of power during acceleration
    • •Rough or uneven engine idle
    • +{count} more
  3. how to fix the Tesla Model 3 Highland (2024-present) if the cruise control isn't responding

    Learn how to diagnose and fix cruise control issues in the 2024 Tesla Model 3 Highland. Step-by-step guide with diagnostic procedures and repair instr...

    Component:Electrical
    Symptoms
    • •Cruise control indicator light not illuminated
    • •Inability to set or adjust cruise control speed
    • +{count} more
  4. how to fix the rear parking sensors not working in my Tesla Model 3 Highland (2024-present)?

    Learn how to diagnose and fix rear parking sensors not working in Tesla Model 3 Highland. Step-by-step guide with diagnostic procedures and repair ins...

    Component:Electrical
    Symptoms
    • •Rear parking sensor warning message displayed on the dashboard
    • •No audible alerts when reversing
    • +{count} more
  5. how to replace the 12V battery in my Tesla Model 3 Highland (2024-present)

    Learn how to replace the 12V battery in your Tesla Model 3 Highland (2024-present). Step-by-step instructions, tools needed, and safety tips included.

    Component:Electrical
    Symptoms
    • •Vehicle will not power on or start
    • •Electrical components such as lights, infotainment, or power windows malfunction
    • +{count} more
  6. why does my Tesla Model 3 Highland (2024-present) AC blow warm air instead of cold?

    Complete guide to fixing AC that blows warm air in Tesla Model 3 Highland. Includes symptoms, diagnostic steps, tools required, and repair procedures.

    Component:HVAC
    Symptoms
    • •Warm air blowing from the AC vents
    • •Reduced cooling efficiency when set to maximum
    • +{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