how to fix P0301 code in Honda Pilot YF3 (2016-2022)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the engine is cool and disconnect the negative battery terminal.
• Tools Required: Socket set, torque wrench, compression tester, OBD-II scanner.

2. Replace Spark Plug

1. Remove the engine cover (if applicable) using a socket set.
2. Disconnect the ignition coil connector from cylinder 1.
3. Unscrew the ignition coil using a socket wrench and remove it.
4. Remove the spark plug using a spark plug socket.
5. Inspect the spark plug for signs of wear; replace if necessary.
6. Install the new spark plug, torquing it to the manufacturer's specifications (usually around 13 lb-ft).
7. Reinstall the ignition coil and reconnect the connector.

3. Test Ignition Coil

1. Swap the ignition coil from cylinder 1 with another cylinder (e.g., cylinder 2).
2. Clear the codes using the OBD-II scanner.
3. Start the engine and monitor if the P0301 code reappears or if it shifts to the cylinder where the coil was swapped.

4. Inspect Fuel Injector

1. Disconnect the fuel injector connector for cylinder 1.
2. Use a multimeter to check for proper voltage and resistance (consult manufacturer specifications).
3. If faulty, replace the fuel injector and ensure correct installation.

5. Check Compression

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 (normal should be around 180-200 psi).
4. If the reading is low, further inspection of the valves or piston rings may be necessary.