how to fix P0302 code in Toyota Camry Seventh Generation (2012-2017)

Solution

1. Preparation

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

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 2 by unscrewing it.
• Use the spark plug socket to remove the old spark plug.
• Inspect the spark plug gap and replace it with a new spark plug, ensuring it is gapped to manufacturer specifications (typically around 0.043 inches).
• Torque the new spark plug to the manufacturer's specifications (usually around 13 lb-ft).
• Reinstall the ignition coil and reconnect the wiring harness.

3. Replace Ignition Coil (if faulty)

• Tools Required: Socket set, torque wrench.
• Remove the ignition coil from cylinder 2 (if previously tested and found faulty).
• Install the new ignition coil and ensure it is seated properly.
• Torque the mounting bolts to the manufacturer's specifications.

4. Clean or Replace Fuel Injector

• Tools Required: Fuel injector cleaning kit or replacement injector.
• Remove the fuel rail if necessary to access the fuel injector for cylinder 2.
• If cleaning, use a fuel injector cleaner according to the kit instructions. If replacing, install the new fuel injector, making sure it clicks into place.
• Reattach the fuel rail and ensure all connections are secure.

5. Test for Vacuum Leaks

• Tools Required: Smoke machine or carburetor cleaner.
• Inspect and replace any damaged vacuum hoses.
• Use a smoke machine to identify leaks or spray carburetor cleaner around the intake manifold while the engine is running. If the engine revs up, a leak is confirmed.