how to fix P0301 code in Honda CR-V Fifth Generation (2017-2022)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, multimeter, fuel injector cleaner.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool before starting repairs.

2. Replace Spark Plug

1. Remove the engine cover if equipped.
2. Locate the spark plug for cylinder 1.
3. Using a socket and ratchet, carefully unscrew the spark plug.
4. Inspect the old spark plug for signs of wear or fouling.
5. Install the new spark plug with the correct gap according to manufacturer specifications.
6. Torque the new spark plug to the specified value (typically around 13 lb-ft).

3. Inspect and Replace Ignition Coil

1. Disconnect the electrical connector from the ignition coil for cylinder 1.
2. Remove the mounting bolts securing the ignition coil.
3. Pull the ignition coil out of the cylinder head.
4. Install the new ignition coil and secure it with bolts.
5. Reconnect the electrical connector.

4. Test Fuel Injector

1. Disconnect the fuel injector connector for cylinder 1.
2. Use a multimeter to test the resistance of the fuel injector; compare it to specifications.
3. If the injector is faulty, remove it by unscrewing the retaining clip and pulling it out of the fuel rail.
4. Install a new fuel injector and reconnect the connector.

5. Perform Compression Test

1. Remove the spark plug for cylinder 1.
2. Insert the compression tester into the spark plug hole.
3. Crank the engine for a few seconds and take the reading.
4. If compression is low, further diagnosis of the valves or piston rings may be required.