how to fix the P0302 code on my Toyota Corolla E170 (2013-2019)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before working on any components.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket, dielectric grease.
• Remove the ignition coil or spark plug wire from cylinder 2.
• Use the spark plug socket to remove the old spark plug.
• Inspect the new spark plug and apply dielectric grease to the inside of the boot.
• Install the new spark plug and torque it to the manufacturer’s specifications (typically around 13-15 ft-lbs).
• Reattach the ignition coil or spark plug wire.

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set.
• If the spark plug replacement does not resolve the issue, inspect the ignition coil for damage.
• Remove the ignition coil from cylinder 2.
• Replace with a new ignition coil if necessary, ensuring secure connections.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Test Fuel Injector

• Tools Required: Fuel injector tester (if necessary).
• Remove the fuel injector from cylinder 2.
• Test the injector for proper operation using a fuel injector tester.
• Clean or replace the injector if it is clogged or malfunctioning.

5. Vacuum Leak Inspection

• Inspect all hoses and gaskets in the intake manifold for leaks.
• Replace any damaged hoses or gaskets to ensure a proper seal.