how to troubleshoot a P0301 code on my Honda CR-V Sixth Generation (2023-present)?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• 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

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector for cylinder 1.
  3. Unbolt and remove the ignition coil from cylinder 1.
  4. Remove the spark plug from cylinder 1 using a spark plug socket.
  5. Inspect the spark plug for wear; replace with a new spark plug if necessary (specification: NGK or Denso brand recommended).
  6. Reinstall the spark plug and torque to manufacturer specification (typically around 13-15 lb-ft).
  7. Reinstall the ignition coil and connector.

3. Inspect and Replace Fuel Injector

• Sub-steps:
  1. Remove the fuel rail cover if present.
  2. Disconnect the fuel injector connector for cylinder 1.
  3. Remove the fuel rail bolts and gently lift the fuel rail to access the injector.
  4. Inspect the fuel injector for blockage or damage; replace if necessary.
  5. Reinstall the fuel rail and ensure all connections are secure.

4. Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1 again.
  2. Insert a compression gauge into the spark plug hole.
  3. Crank the engine for a few seconds and record the compression reading.
  4. Compare the reading to the manufacturer's specifications (typically around 180-200 psi).
  5. If the compression is low, further investigation into the engine's internal components is needed.