what does code P0302 mean for my Toyota Highlander XU70 (2020-Present)?

Solution

1. Preparation

• Gather the necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Spark Plug

1. Remove the engine cover if applicable.
2. Locate and remove the spark plug wire or ignition coil for cylinder 2.
3. Use a spark plug socket to remove the spark plug from cylinder 2.
4. Inspect the spark plug for signs of wear or fouling.
5. Replace with a new spark plug if necessary, torquing to manufacturer's specifications (typically around 13-16 ft-lbs).

3. Test and Replace Ignition Coil

1. Remove the ignition coil for cylinder 2.
2. Use a multimeter to test the resistance of the ignition coil (check service manual for specifications).
3. If the coil is faulty, replace it with a new ignition coil.
4. Reinstall the ignition coil securely.

4. Check and Clean Fuel Injector

1. Remove the fuel injector from cylinder 2.
2. Inspect for clogs or debris; use a fuel injector cleaner if necessary.
3. Reinstall the injector, ensuring proper seating and connection.
4. If the injector is faulty, replace it with a new one.

5. Perform Compression Test

1. Remove the spark plug from cylinder 2.
2. Use a compression gauge to measure the cylinder's pressure.
3. Compare results with manufacturer specifications (typically around 120-150 psi).
4. Address any low compression issues, which may involve further engine repairs.