how to fix P0302 code in Toyota Corolla E140 (2006-2013)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal.
• Allow the engine to cool before starting work.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, gap gauge
• Remove the ignition coil for cylinder 2.
• Using the spark plug socket, remove the spark plug from cylinder 2.
• Inspect the old spark plug for signs of wear or fouling.
• Gap the new spark plug to the manufacturer's specifications.
• Install the new spark plug and torque it to the manufacturer's specifications (typically around 13 lb-ft).
• Reinstall the ignition coil.

3. Check and Replace Ignition Coil (if necessary)

• Tools Required: Ratchet, socket set
• Remove the ignition coil from cylinder 2.
• Test the ignition coil using a multimeter to ensure it is within specifications.
• If faulty, replace with a new ignition coil and secure it properly.

4. Inspect and Clean Fuel Injector (if necessary)

• Tools Required: Fuel injector cleaner, basic hand tools
• Remove the fuel injector from cylinder 2.
• Clean the injector using a fuel injector cleaner or replace it if clogged.
• Reinstall the cleaned or new fuel injector and ensure it is seated properly.

5. Compression Test (if necessary)

• Tools Required: Compression tester
• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare the reading to manufacturer specifications (usually around 180 psi).
• If compression is low, further diagnosis of internal engine components may be needed.