how to fix P0301 code in Toyota Tacoma N300 (2016-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical issues.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if necessary.
• Disconnect the ignition coil connector from Cylinder 1.
• Remove the ignition coil by unscrewing the bolts and gently lifting it out.
• Use a spark plug socket to remove the spark plug. Inspect for wear or fouling.
• Install a new spark plug, ensuring to set the gap as per manufacturer specifications (typically around 0.044 inches for Toyota).
• Torque the spark plug to manufacturer specifications (usually around 13 lb-ft).

3. Inspect and Replace Ignition Coil

• Check the ignition coil for any cracks or signs of wear.
• If faulty, replace it with a new ignition coil specific to the Tacoma N300.
• Reinstall the ignition coil, ensuring it is seated properly and reconnect the electrical connector.

4. Clean or Replace Fuel Injector

• If the fuel injector is clogged, use an injector cleaner or replace the injector.
• To remove the fuel injector, disconnect the fuel rail and carefully pull the injector out.
• Install a new fuel injector (if applicable) and ensure it is properly seated before reassembling the fuel rail.

5. Compression Test (if necessary)

• If misfire persists, conduct a compression test on Cylinder 1.
• Remove the spark plug and insert the compression gauge into the spark plug hole.
• Crank the engine and record the compression reading. Compare it to the manufacturer’s specifications (generally between 120-200 psi).
• If compression is low, further investigation into piston rings or valves may be required.