how do I fix the P0302 code for my Toyota RAV4 Fourth Generation (2013-2018)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical issues.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector from cylinder 2.
• Remove the ignition coil using the socket set.
• Unscrew the spark plug from cylinder 2 using the spark plug socket.
• Inspect the old spark plug for wear or damage. Replace if necessary.
• Install the new spark plug, ensuring it is torqued to the manufacturer’s specifications (usually around 13-16 ft-lbs).
• Reinstall the ignition coil and reconnect the connector.

3. Inspect and Replace Ignition Coil (if necessary)

• Tools Required: Socket set, torque wrench.
• If the ignition coil was found to be faulty, replace it by removing the old coil and installing the new one, ensuring it is seated correctly.
• Torque the ignition coil screws to the manufacturer’s specifications.

4. Check for Vacuum Leaks

• Visually inspect all vacuum hoses for cracks or disconnections.
• Spray a small amount of carburetor cleaner around the intake manifold while the engine is running. If the idle changes, there is a vacuum leak that needs to be repaired.

5. Compression Test (if necessary)

• Tools Required: Compression tester.
• Remove the spark plugs from all cylinders.
• Insert the compression tester into the spark plug hole of cylinder 2.
• Crank the engine and note the compression reading. Compare it to manufacturer specifications (usually between 150-200 psi).
• If the reading is low, further investigation into engine internals may be necessary.