how to fix P0302 cylinder 2 misfire code on my Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the engine is cool.
• Disconnect the negative battery terminal.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket
• Remove the ignition coil and spark plug from cylinder 2.
• Inspect the spark plug for wear or fouling. Replace if necessary.
• Install the new spark plug, tightening it to the manufacturer's specified torque (usually around 13-16 lb-ft).
• Reinstall the ignition coil securely.

3. Test and Replace Ignition Coil

• Tools Required: Multimeter
• Connect the multimeter to the ignition coil terminals. Check for continuity and resistance according to the specifications in the service manual.
• If the ignition coil is faulty, replace it with a new one.
• Reassemble all components securely.

4. Inspect and Replace Fuel Injector

• Tools Required: Fuel injector removal tool, socket set
• Locate the fuel injector for cylinder 2; disconnect the electrical connector.
• Remove the fuel rail (if necessary) to access the injector.
• Inspect the injector for clogs or damage. Replace if needed.
• Reinstall the injector, ensuring a proper seal, and reconnect the electrical connector.

5. Verify Compression

• Tools Required: Compression gauge
• Remove the spark plug from cylinder 2 and insert the compression gauge.
• Crank the engine and check the compression reading. Compare it to the specifications for the engine.
• If compression is low, further investigation into mechanical issues may be required (valves, piston rings).