how do I fix the P0302 code on my Toyota Highlander XU70 (2020-Present)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before starting work.

2. Replace Ignition Coil

• Tools Required: Socket set, torque wrench, ratchet
• Remove the engine cover (if applicable) to access the ignition coils.
• Disconnect the electrical connector from the ignition coil for cylinder 2.
• Remove the bolt(s) securing the ignition coil using a socket and ratchet.
• Carefully pull the ignition coil out from the spark plug well.
• Install the new ignition coil by reversing the removal procedure.
• Torque the coil bolt to the manufacturer's specification (consult repair manual for exact torque).

3. Replace Spark Plug

• Tools Required: Spark plug socket, torque wrench, gap gauge
• Remove the ignition coil from cylinder 2 as described in the previous step.
• Use a spark plug socket to remove the old spark plug from cylinder 2.
• Inspect the spark plug for wear; if necessary, replace it with a new one.
• Set the gap of the new spark plug to the manufacturer's specification using a gap gauge.
• Install the new spark plug and torque to the specified value (check repair manual for exact torque).
• Reinstall the ignition coil after replacing the spark plug.

4. Inspect and Test Fuel Injector

• Tools Required: Fuel injector cleaner, multimeter (if testing electrical)
• Disconnect the fuel injector connector for cylinder 2.
• Use a multimeter to check for continuity and proper resistance of the injector.
• If the injector is faulty, replace it with a new one.
• Reconnect the fuel injector and make sure all connections are secure.