how to fix the P0302 code in my Toyota Corolla E170 (2013-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface, and the engine is turned off and cool.
• Disconnect the negative battery terminal to avoid electrical shock.

2. Replace Spark Plug in Cylinder 2

• Tools Required: Socket set, torque wrench, spark plug gap tool.
• Remove the ignition coil and spark plug cover.
  • Unscrew the bolts securing the cover and lift it off.
• Remove the spark plug from cylinder 2 using a socket wrench.
• Inspect the old spark plug for wear; replace if worn or fouled.
• Install the new spark plug, ensuring it is gapped correctly per manufacturer specifications (usually around 0.043 inches).
• Torque the spark plug to the manufacturer’s specification (typically 13 ft-lbs).

3. Inspect and Replace Ignition Coil (if necessary)

• Tools Required: Socket set.
• Remove the ignition coil from cylinder 2.
  • Unscrew the bolts holding the ignition coil and gently pull it out.
• Inspect the coil for cracks or carbon tracking; replace if damaged.
• Install the new ignition coil by reversing the removal steps.

4. Check and Clean Fuel Injector (if necessary)

• Tools Required: Fuel injector cleaner, wrench set.
• Remove the fuel injector from cylinder 2.
  • Disconnect the fuel line and electrical connector.
  • Unscrew the injector from its mounting.
• Clean the injector using a fuel injector cleaner, or replace if it’s clogged.
• Reinstall the fuel injector and reconnect the fuel line and electrical connector.

5. Reassemble and Final Checks

• Reinstall the ignition coil and spark plug cover.
• Reconnect the negative battery terminal.