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Home/Cars/Toyota/Camry/XV80 (2025-Present)/how to address P0302 code in Toyota Camry XV50 (2012-2017)

how to address P0302 code in Toyota Camry XV50 (2012-2017)

Toyota Camry XV80 (2025-Present)

Severity: highDifficulty: mediumError Code: P03021-3 hours
3 min read
498 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 Toyota Camry XV50 (2012-2017). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0302
Component
Engine
Repair Time
1-3 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical components.
  • ⚠Allow the engine to cool before performing any repairs.

Symptoms

  • •Check engine light illuminated
  • •Rough idle or engine shaking
  • •Loss of power during acceleration
  • •Increased fuel consumption
  • •Engine stalling at low speeds

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm the P0302 code.
  2. 2Visually inspect the spark plug and ignition coil in cylinder 2 for damage or wear.
  3. 3Check the ignition coil operation by swapping it with another cylinder and see if the misfire follows.
  4. 4Examine the fuel injector for cylinder 2 to ensure proper operation and no clogging.
  5. 5Perform a compression test on cylinder 2 to rule out mechanical issues.
  6. 6Inspect vacuum lines and intake manifold for leaks that could affect cylinder performance.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Disconnect the negative battery terminal to ensure safety.
  • Allow the engine to cool down.

2. Inspect and Replace Spark Plug

  • Remove the ignition coil by unbolting and disconnecting the electrical connector.
  • Remove the spark plug using a spark plug socket.
  • Inspect the spark plug for wear. If damaged, replace it with an OEM equivalent.
  • Torque the new spark plug to 13 ft-lbs (17.5 Nm).

3. Inspect and Replace Ignition Coil

  • If the spark plug is fine, test the ignition coil. If it is faulty, replace it.
  • To replace, simply install the new ignition coil onto the spark plug and reconnect the electrical connector.
  • Ensure the ignition coil is properly seated.

4. Check and Clean Fuel Injector

  • If misfire persists, remove the fuel injector for cylinder 2.
  • Inspect for clogs or damage. Clean using a fuel injector cleaner or replace if necessary.
  • Reinstall the injector, ensuring it is seated properly.

5. Reassemble and Reconnect Battery

  • Reattach any components removed during the repair.
  • Reconnect the negative battery terminal.

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
  • Spark plug socket
  • Fuel injector cleaning kit

Parts Required

  • Spark plug (OEM recommended)
  • Ignition coil (if needed)
  • Fuel injector (if needed)

Additional Information

Error CodeP0302
Component

Engine

Repair Time

1-3 hours

Difficulty

medium

Severity

high

Tools

5 items

Parts

3 items

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