how to fix P0301 misfire code in my Toyota Camry Seventh Generation (2012-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working.
• Remove any engine covers or components obstructing access to cylinder 1.

2. Inspect and Replace Spark Plug

• Remove the spark plug from cylinder 1 using a spark plug socket.
• Inspect the spark plug for signs of wear, carbon deposits, or oil fouling.
• If needed, replace with a new spark plug (OEM specification recommended).
• Torque the new spark plug to the manufacturer's specification (typically around 13-15 lb-ft).

3. Check and Replace Ignition Coil

• Remove the ignition coil from cylinder 1.
• Inspect the coil for cracks or damage.
• If faulty, replace the ignition coil with a new one (ensure it matches OEM specifications).
• Reinstall the ignition coil and ensure it is securely connected.

4. Inspect and Replace Fuel Injector

• Remove the fuel injector from cylinder 1.
• Check for clogs or damage.
• If the injector is faulty, replace it with a new one (ensure it matches OEM specifications).
• Reinstall the injector, making sure it clicks into place securely.

5. Perform Compression Test

• If the misfire persists, perform a compression test on cylinder 1.
• If compression is low, further investigation into the cylinder head, piston, or valves may be necessary.

6. Reassemble and Reconnect

• Reinstall any components or covers that were removed.
• Reconnect the battery.