how to fix P0301 code on my Toyota Tacoma N300 (2016-Present)?

Solution

1. Preparation

• Gather necessary tools and safety equipment.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug gap tool.
• Remove the ignition coil from cylinder 1 by unbolting and disconnecting the electrical connector.
• Use a spark plug socket to remove the old spark plug from cylinder 1.
• Inspect and gap the new spark plug to the manufacturer's specifications.
• Install the new spark plug and torque it to the specified value (typically 13-15 ft-lbs).
• Reinstall the ignition coil, ensuring it is seated properly and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil (if necessary)

• If the ignition coil shows signs of damage or wear, remove it using the same steps as above.
• Install a new ignition coil, ensuring it fits snugly and reconnect the electrical connections.

4. Test Fuel Injector

• Disconnect the fuel injector connector from cylinder 1.
• Use a multimeter to check for proper resistance; replace if outside the manufacturer's specifications.
• If the injector is clogged, consider using a fuel injector cleaner or replacing the injector.

5. Perform Compression Test

• Remove the spark plug from cylinder 1 and attach the compression gauge.
• Crank the engine to measure the compression and compare it to the specifications (usually around 150 psi).
• If compression is low, further investigation into the engine’s internal components may be required.