What does error code P0302 indicate for a 2020 Toyota Camry?

Error Code P0302 Overview

Definition:
Error code P0302 indicates a "Cylinder 2 Misfire Detected." This means that the engine control unit (ECU) has identified a misfire occurring in the second cylinder of the engine. Misfires can cause a range of performance issues and can lead to more serious engine problems if not addressed.

Tools Required

• OBD-II Scanner
• Socket set
• Torque wrench
• Compression gauge
• Multimeter
• Noid light (for injector testing)
• Basic hand tools (screwdrivers, pliers, etc.)
• Smoke machine (for vacuum leak detection, optional)

Repair Instructions

1. Spark Plug Replacement:

• If the spark plug is fouled or damaged, replace it with a new one, ensuring it meets the manufacturer's specifications. Torque to spec (typically around 13-16 lb-ft).

2. Ignition Coil Replacement:

• If the ignition coil is determined to be faulty, replace it. Disconnect the wiring harness, remove the mounting bolts, and install the new coil. Torque the bolts to manufacturer specifications.

3. Fuel Injector Replacement:

• If the fuel injector is faulty, disconnect the fuel line (be cautious of fuel spillage), remove the mounting bolts, and replace with a new injector. Ensure proper seating and reconnect the fuel line.

4. Compression Repair:

• If the compression test shows low compression, further diagnosis is needed to determine if it's due to a valve issue, piston rings, or head gasket failure. Repairs may involve head removal and valve job or engine rebuild.

5. Vacuum Leak Repair:

• If a vacuum leak is detected, replace any damaged hoses or gaskets. Ensure all connections are tight and secure.

Final Steps

1. Clear Codes:

   • After performing repairs, use the OBD-II scanner to clear the P0302 code.

2. Test Drive:

   • Conduct a test drive to monitor engine performance and ensure the Check Engine Light does not reappear.

3. Re-Check Codes:

   • After the test drive, rescan the vehicle to confirm that the P0302 code has not returned.

By following these steps, you should be able to diagnose and address the issue related to the P0302 error code in your 2020 Toyota Camry. Always refer to the vehicle’s service manual for specific torque specifications and detailed procedures.