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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool if it has been running.

2. Replace Spark Plug

1. Remove the engine cover if applicable.
2. Remove the ignition coil from cylinder 1:
   • Disconnect the electrical connector.
   • Unbolt the coil using a socket set.
3. Remove the spark plug using a spark plug socket and ratchet.
4. Inspect the old spark plug for signs of wear, such as fouling or excessive gap.
5. Install the new spark plug:
   • Apply anti-seize compound to the threads (optional).
   • Torque to manufacturer specifications (typically around 13 lb-ft / 18 Nm).
6. Reinstall the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil (if necessary)

1. If the ignition coil is faulty, remove the old coil as described above.
2. Install the new ignition coil onto the spark plug.
3. Secure the coil with bolts and reconnect the electrical connector.

4. Inspect and Clean Fuel Injector (if necessary)

1. Remove the fuel injector for cylinder 1:
   • Disconnect the fuel injector connector.
   • Unbolt the injector and remove it from the rail.
2. Clean the injector using an appropriate cleaning solvent or replace it if damaged.
3. Reinstall the fuel injector, ensuring proper seating and connection.

5. Compression Test (if necessary)

1. Remove the spark plug for cylinder 1.
2. Insert a compression gauge into the spark plug hole.
3. Crank the engine to obtain a reading; compare to manufacturer specifications (typically around 180 psi).
4. If compression is low, further diagnostics may be required for internal engine issues.