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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket, dielectric grease.
• Remove the ignition coil by unscrewing the mounting bolts and disconnecting the electrical connector.
• Take out the old spark plug using a spark plug socket.
• Inspect the spark plug gap and replace it with a new spark plug if necessary. Use dielectric grease on the threads before installation.
• Reinstall the ignition coil and reattach the electrical connector.

3. Test and Replace Ignition Coil (if necessary)

• If the spark plug replacement doesn't resolve the issue, swap the ignition coil with a coil from another cylinder.
• Clear the error codes and run the engine to see if the P0302 code returns.
• If it does, replace the faulty ignition coil with a new one.

4. Clean or Replace Fuel Injector

• Tools Required: Fuel injector cleaning kit or replacement injector.
• Disconnect the fuel injector electrical connector and fuel line.
• Remove the fuel injector from the intake manifold.
• Clean the injector using a cleaning kit or replace it if it is defective.
• Reinstall the injector and reconnect the fuel line and electrical connector.

5. Perform Compression Test (if necessary)

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole and crank the engine several times.
• Check the compression reading; it should match the manufacturer specifications. If low, further engine diagnostics may be necessary.