how to resolve P0301 code on Honda Accord 9th Generation (2013-2017)?

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, compression tester, vacuum gauge
• Safety Warnings: Disconnect the battery before starting work and allow the engine to cool down.

2. Replace Spark Plug

1. Remove the engine cover if applicable.
2. Disconnect the ignition coil connector for cylinder 1.
3. Remove the ignition coil using a socket set.
4. Remove the spark plug using a spark plug socket.
5. Inspect the old spark plug; if it appears worn or fouled, replace it with a new spark plug.
6. Torque the new spark plug to the manufacturer's specifications (typically around 13-16 lb-ft).
7. Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if needed)

1. If the ignition coil was found faulty during testing, remove the coil from cylinder 1.
2. Install the new ignition coil, ensuring it is seated properly.
3. Reconnect the ignition coil connector.

4. Clean or Replace Fuel Injector (if needed)

1. If the fuel injector is clogged, remove it from the engine.
2. Clean the injector using a fuel injector cleaner or replace it if necessary.
3. Reinstall the fuel injector and reconnect the fuel rail.

5. Conduct Compression Test (if needed)

1. Remove the spark plug from cylinder 1.
2. Insert the compression tester into the spark plug hole.
3. Crank the engine and record the compression reading.
4. If the compression is below specifications (typically between 180-220 psi), further investigation is needed.