how to fix P0302 code in my Toyota RAV4 Fourth Generation (2013-2018)

Solution

1. Preparation

• Gather tools and parts before starting the repair.
• Disconnect the negative terminal of the battery to ensure safety.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench.
• Remove the engine cover if applicable.
• Locate the spark plug for cylinder 2.
• Use the socket set to remove the spark plug.
• Inspect the spark plug for wear or deposits. Replace if necessary.
• Torque the new spark plug to the manufacturer’s specification (typically around 13-15 lb-ft).
• Reinstall the engine cover.

3. Test and Replace Ignition Coil

• Tools Required: Socket set, multimeter (for testing).
• Locate the ignition coil for cylinder 2.
• Disconnect the electrical connector from the ignition coil.
• Use a multimeter to test the resistance of the coil (refer to the specification in the service manual).
• If the coil is faulty, remove it using the socket set and install a new ignition coil.
• Reconnect the electrical connector.

4. Check Fuel Injector

• Tools Required: Fuel injector cleaning kit or replacement injector.
• Locate the fuel injector for cylinder 2.
• Disconnect the fuel injector electrical connector.
• If cleaning, follow the instructions of the cleaning kit to service the injector. If replacement is necessary, remove it and install the new injector.
• Reconnect the electrical connector.

5. Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole.
• Crank the engine to get a reading. Compare the result to manufacturer specifications.
• If compression is low, further investigation into the piston rings or valves may be necessary.