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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to ensure safety.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Remove the spark plug cover if applicable.
• Use a socket wrench to remove the spark plug from Cylinder 2.
• Inspect the spark plug for wear and replace it if necessary.
• Torque the new spark plug to the manufacturer’s specification (typically around 13-15 ft-lbs).

3. Check and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil on Cylinder 2.
• Remove the ignition coil by unscrewing the retaining bolts.
• Inspect the coil for any signs of damage.
• If faulty, replace with a new ignition coil and secure it with bolts.
• Reconnect the electrical connector.

4. Inspect Fuel Injector

• Disconnect the fuel injector connector on Cylinder 2.
• Remove the fuel rail if necessary to access the injector.
• Inspect the fuel injector for clogs or leaks.
• Replace with a new injector if it's defective.

5. Compression Test

• Use a compression tester to check the compression in Cylinder 2.
• If compression is low, further investigation is needed (potential issues with valves, piston rings, or head gasket).
• If low compression is confirmed, repair or replace affected components.