how to fix P0301 code in Toyota Camry XV50 (2012-2017)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1:
  • Unscrew the retaining bolts using a socket set.
  • Gently pull the coil straight out.
• Remove the spark plug using a spark plug socket:
  • Turn counterclockwise to loosen and remove the spark plug.
• Inspect the spark plug for wear or damage. If necessary, replace with new spark plug (OEM recommended).
• Reinstall the spark plug:
  • Hand-tighten the spark plug, then use a torque wrench to tighten to 13 ft-lbs (18 Nm).
• Reinstall the ignition coil and secure with bolts.

3. Test and Replace Ignition Coil (if needed)

• If the ignition coil appears faulty, replace it:
  • Disconnect the electrical connector from the ignition coil.
  • Remove the coil and install the new one by reversing the removal steps.
  • Ensure the connector clicks into place firmly.

4. Check and Replace Fuel Injector (if needed)

• Remove the fuel injector for cylinder 1:
  • Disconnect the fuel line and electrical connector.
  • Remove the retaining clips and pull the injector out.
• Inspect the injector for clogs or damage. Clean or replace if necessary.
• Reinstall the injector, ensuring proper seating and securing clips.

5. Reassemble and Final Checks

• Reconnect any disconnected components and the battery terminal.
• Clear the P0301 code using the OBD-II scanner.
• Start the engine and monitor for any returning codes or symptoms.