what does P0302 mean in my Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench
• Remove the ignition coil and spark plug from cylinder 2.
• Inspect the spark plug for wear or damage and replace it if necessary.
• Torque the new spark plug to the manufacturer’s specification (typically around 13 lb-ft for Honda).
• Reinstall the ignition coil securely.

3. Test and Replace Ignition Coil (if needed)

• Tools Required: Multimeter
• Check the resistance of the ignition coil using a multimeter; compare it to manufacturer specifications.
• If the coil is faulty, remove it and replace it with a new one.
• Reconnect the wiring harness and ensure it is secure.

4. Inspect Fuel Injector

• Tools Required: Fuel pressure gauge, injector cleaner
• Disconnect the fuel injector connector for cylinder 2.
• Test the injector's resistance with a multimeter; if it's out of spec, replace it.
• Clean the fuel injector using an injector cleaner or replace it with a new one.

5. Check for Vacuum Leaks

• Inspect all vacuum hoses and the intake manifold for cracks or disconnections.
• Use a smoke machine or soapy water to detect any leaks.
• Repair or replace any damaged hoses or gaskets.

6. Compression Test

• Tools Required: Compression gauge
• Remove the spark plug from cylinder 2 and insert the compression gauge.
• Crank the engine and record the compression reading; compare with specifications.
• If compression is low, further diagnostics may be required, potentially looking into valve or piston issues.