how to fix P0302 code on Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery cable to ensure safety.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Fuel injector cleaner (if needed)
• Multimeter (for testing ignition coil)

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2 by unscrewing it.
• Extract the spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace if necessary.
• Install a new spark plug ensuring it is gapped correctly (typically 0.043 inches for Honda).

3. Check and Replace Ignition Coil

• If the ignition coil was found faulty, replace it:
  • Remove the coil connector and the screws holding the ignition coil.
  • Install the new ignition coil and secure it with screws.
  • Reconnect the coil connector.

4. Test and Clean Fuel Injector

• If the fuel injector is suspected to be faulty:
  • Remove the fuel injector using a fuel injector puller.
  • Inspect for carbon build-up and clean with fuel injector cleaner or replace if necessary.
  • Reinstall the fuel injector ensuring proper sealing.

5. Perform Compression Test

• Install the compression tester into the spark plug hole for cylinder 2.
• Crank the engine and record the compression reading; it should be within the manufacturer's specifications (typically around 180 psi).
• If compression is low, further engine diagnostics may be required.