what does P0302 code indicate for my Toyota Corolla E170 (2013-2019)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

1. Remove the engine cover if necessary.
2. Disconnect the ignition coil connector and remove the ignition coil.
3. Remove the spark plug using a socket wrench.
4. Inspect the spark plug for wear and replace if necessary (consider replacing all spark plugs if they are due).
5. Install the new spark plug, torque it to manufacturer specifications (typically 13-15 lb-ft for most spark plugs).
6. Reinstall the ignition coil and reconnect the connector.

3. Check and Replace Ignition Coil

1. If the ignition coil tests faulty, remove it from cylinder 2.
2. Replace the ignition coil with a new one (ensure it matches specifications).
3. Reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

1. Remove the fuel rail if necessary to access the fuel injector.
2. Disconnect the fuel line carefully (use safety goggles and a rag).
3. Remove the fuel injector from the rail.
4. Clean the injector using an appropriate fuel injector cleaner or replace it if damaged.
5. Reinstall the injector and reconnect the fuel line.

5. Test Drive

• After all necessary repairs, reconnect the battery and start the engine.
• Allow the engine to run and check for smooth operation.