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

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 1 by unscrewing the retaining bolts.
• Carefully pull out the ignition coil and inspect for damage.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for wear and replace if necessary.
• Install the new spark plug to the manufacturer’s torque specification (typically 13-15 lb-ft).

3. Check and Replace Ignition Coil

• If the ignition coil is found defective during inspection, replace it with a new one.
• Reinstall the new ignition coil and secure it with the retaining bolts.

4. Inspect and Replace Fuel Injector

• Remove the fuel rail if necessary to access the fuel injector for cylinder 1.
• Disconnect the electrical connector from the fuel injector.
• Remove the fuel injector and inspect for clogs or damage.
• Replace with a new fuel injector if necessary, ensuring it is seated properly.

5. Reassemble and Reconnect

• Reattach the fuel rail and all connectors.
• Reconnect the negative battery terminal.

6. Clear Codes and Test

• Use an OBD-II scanner to clear the P0301 code.
• Start the engine and allow it to reach operating temperature, checking for any new codes.