how to fix P0302 code in my Toyota RAV4 XA50 (2019-2024) for a cylinder two misfire?

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, multimeter, vacuum gauge.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Replace Spark Plug

• Remove the engine cover (if applicable).
• Using a socket set, carefully remove the spark plug from cylinder two.
• Inspect the old spark plug for signs of wear, carbon buildup, or oil fouling.
• Install a new spark plug with the correct gap (consult the owner’s manual for specifications).
• Torque the spark plug to the manufacturer’s specified value.

3. Inspect and Replace Ignition Coil

• Remove the ignition coil for cylinder two by detaching the connector and unscrewing the mounting bolts.
• Inspect the ignition coil for cracks or damage.
• If necessary, replace the ignition coil with a new one and reconnect the electrical connector.

4. Check Fuel Injector

• Disconnect the fuel injector connector from cylinder two.
• Using a multimeter, test the injector for proper resistance (consult specifications).
• If the injector is faulty, remove it by unscrewing the mounting bolts and disconnecting the fuel line.
• Install a new fuel injector and reconnect all lines and connectors.

5. Perform Compression Test

• Remove the spark plug from cylinder two to gain access.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare to the specifications for the engine. If low, further investigation is needed for internal engine issues.