how to fix P0301 code in Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts.
• Disconnect the electrical connector from the ignition coil.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for signs of wear, carbon buildup, or damage.
• If necessary, replace the spark plug with a new one (specification: Denso SK20HR11 or equivalent).
• Reinstall the spark plug and torque to manufacturer specifications (typically about 13 lb-ft).

3. Check and Replace Ignition Coil

• If the spark plug appears fine, inspect the ignition coil for cracks or signs of failure.
• Replace the ignition coil with a new one if damaged (OEM part recommended).
• Reconnect the electrical connector and secure the ignition coil.

4. Fuel System Inspection

• Use a fuel pressure gauge to check the fuel pressure at the fuel rail.
• If pressure is low, inspect the fuel pump and fuel filter for clogs or failures.
• Replace the fuel filter if necessary and ensure the fuel pump operates within specifications.

5. Compression Test

• Remove the spark plug from cylinder 1.
• Insert a compression tester into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare it to the manufacturer's specifications (typically around 180-210 psi).
• If the compression is low, further investigation into the piston rings or valve seals may be necessary.