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Home/Cars/Toyota/Camry/Eighth Generation (2018-present)/how to fix the P0302 code in my Toyota Camry Eighth Generation (2018-present)

how to fix the P0302 code in my Toyota Camry Eighth Generation (2018-present)

Toyota Camry Eighth Generation (2018-present)

Severity: highDifficulty: mediumError Code: P03022-4 hours
3 min read
600 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. 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 before opening any components.

Symptoms

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

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm the P0302 code.
  2. 2Inspect the spark plug and ignition coil of cylinder 2 for wear or damage.
  3. 3Check for vacuum leaks around the intake manifold and vacuum hoses.
  4. 4Test the fuel injector operation for cylinder 2 to ensure proper function.
  5. 5Perform a compression test on cylinder 2 to check for mechanical issues.
  6. 6Inspect wiring and connectors related to the ignition system and fuel injector.

Solution

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

  • Tools Required: Socket set, torque wrench, spark plug socket.
  • Remove the ignition coil cover if necessary.
  • Disconnect the ignition coil connector from cylinder 2.
  • Remove the ignition coil by unscrewing the bolts.
  • Take out the spark plug using the spark plug socket.
  • Inspect the spark plug for signs of wear or fouling; replace it if necessary.
  • Install the new spark plug, tightening to the manufacturer’s torque specifications (typically around 13-16 ft-lbs).
  • Reattach the ignition coil and its connector.

3. Check and Replace Ignition Coil (if faulty)

  • If the ignition coil is damaged or faulty, replace it with a new one.
  • Reinstall the ignition coil as described above, ensuring it is properly seated.

4. Inspect and Repair Fuel Injector

  • Tools Required: Fuel injector removal tool, socket set.
  • Disconnect the fuel injector connector for cylinder 2.
  • Remove the fuel rail if necessary to access the injector.
  • Carefully remove the fuel injector and inspect it for clogs or damage.
  • Replace the injector if it’s not functioning properly.
  • Reinstall the fuel injector and ensure connections are secure.

5. Perform Compression Test (if needed)

  • Tools Required: Compression tester.
  • Remove the spark plug from cylinder 2.
  • Insert the compression tester into the cylinder and crank the engine.
  • Record the compression reading; compare it to the manufacturer’s specifications (generally between 180-200 psi).
  • If readings are low, further investigation into internal engine conditions is required.

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 removal tool
  • Compression tester

Parts Required

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

Additional Information

Error CodeP0302
Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

6 items

Parts

3 items

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