how to fix P0302 code on Toyota Camry Seventh Generation (2012-2017)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative terminal of the battery to avoid electrical shorts.
• Allow the engine to cool down before beginning work.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil by unscrewing the retaining bolt and pulling it out.
• Use the spark plug socket to remove the spark plug from cylinder 2.
• Inspect the old spark plug for signs of wear or damage.
• Install the new spark plug and torque it to the manufacturer's specification (typically around 13-15 ft-lbs).
• Reinstall the ignition coil and reconnect its connector.

3. Replace Ignition Coil (if necessary)

• Tools Required: Ratchet, socket set.
• If the ignition coil was faulty, remove it as described in the previous step.
• Install the new ignition coil and secure it with the retaining bolt.
• Reconnect the ignition coil connector.

4. Inspect and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, ratchet, socket set.
• Disconnect the fuel injector harness on cylinder 2.
• Remove the fuel rail bolts and carefully lift the rail to access the injector.
• Remove the old fuel injector and install the new one, ensuring proper seating.
• Reinstall the fuel rail and secure it with bolts.

5. Perform a Compression Test (if necessary)

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2 and insert the compression tester.
• Crank the engine and record the compression reading. Compare it with manufacturer specifications.
• If compression is low, further engine diagnostics may be needed.