how to resolve P0302 code on my Toyota RAV4 XA40 (2013-2018)

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if applicable.
• Disconnect the spark plug wire or ignition coil.
• Remove the spark plug from cylinder 2 using the spark plug socket.
• Inspect the spark plug for signs of wear, damage, or carbon buildup.
• If necessary, replace with a new spark plug, ensuring it is gapped according to specifications (typically 0.044 inches for most Toyota engines).
• Torque the spark plug to manufacturer specifications (usually around 13-15 lb-ft).
• Reconnect the ignition coil or spark plug wire.

3. Test and Replace Ignition Coil

• Tools Required: Multimeter, socket set.
• Remove the ignition coil for cylinder 2 by unbolting it and disconnecting the electrical connector.
• Use a multimeter to test the primary and secondary resistance of the ignition coil (refer to the vehicle service manual for specifications).
• If the coil is faulty, replace it with a new ignition coil.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Inspect Fuel Injector

• Tools Required: Fuel injector cleaner or replacement injector, fuel line removal tool.
• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel rail if necessary to access the injector.
• Inspect the injector for clogs or damage.
• If required, clean the injector using a fuel injector cleaner or replace with a new injector.
• Reassemble all components and reconnect the fuel rail and injector 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 a few times to get a reading.
• Compare the compression reading with the manufacturer's specifications (usually around 180 psi). If low, further engine diagnostics may be necessary.