how to fix P0302 code in Toyota RAV4 XA40 (2013-2018)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, torque wrench, dielectric grease.
• Remove the ignition coil from cylinder 2.
• Unscrew and remove the spark plug.
• Inspect the spark plug for wear; if damaged, replace it with a new one.
• Apply a small amount of dielectric grease to the threads of the new spark plug.
• Install the new spark plug and torque it to the manufacturer’s specifications (typically around 13 ft-lbs).
• Reinstall the ignition coil.

3. Check and Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• Remove the ignition coil from cylinder 2.
• Inspect the coil for cracks or damage.
• If defective, replace it with a new ignition coil.
• Reinstall the ignition coil and torque it to the manufacturer’s specifications.

4. Inspect and Replace Fuel Injector

• Tools Required: Fuel line disconnect tool, socket set.
• Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
• Disconnect the fuel lines and electrical connector from the fuel injector on cylinder 2.
• Remove the fuel injector using the appropriate socket.
• Inspect the injector for clogs or damage; replace if necessary.
• Reinstall the new injector, reconnect the fuel lines, and electrical connector.

5. Perform Compression Test (if needed)

• Tools Required: Compression gauge.
• Remove spark plugs and ignition coils for all cylinders.
• Insert the compression gauge into the cylinder 2 spark plug hole.
• Crank the engine and record the compression reading.
• Compare the reading with the manufacturer specifications. If low, further investigation into the engine's internal components may be needed.