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

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a level surface, engage the parking brake, and disconnect the battery.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench
• Remove the ignition coil from cylinder 2.
• Use the spark plug socket to remove the spark plug from cylinder 2.
• Inspect the spark plug for signs of damage or fouling.
• Install a new spark plug, torquing to the manufacturer's specifications (typically around 13 lb-ft).
• Reinstall the ignition coil securely.

3. Test and Replace Ignition Coil (if necessary)

• If the spark plug is fine, test the ignition coil by swapping it with another cylinder's coil.
• If the P0302 code moves to the other cylinder, replace the ignition coil for cylinder 2.
• Tools Required: Ratchet, socket set
• Disconnect the electrical connector and bolts securing the coil, remove it, and install the new coil.

4. Inspect and Replace Fuel Injector (if necessary)

• Using a multimeter, check the resistance of the fuel injector for cylinder 2.
• If it is out of specifications, remove the fuel rail to access the injector.
• Tools Required: Ratchet, socket set, fuel line removal tool
• Disconnect the injector electrical connector, remove the retaining clips, and pull out the injector.
• Install a new fuel injector, ensuring proper seating and connection.

5. Compression Test (if necessary)

• If misfire persists, perform a compression test on cylinder 2.
• Tools Required: Compression gauge
• Remove the spark plug, install the compression gauge, and crank the engine to read the compression.
• Compare results with manufacturer specifications (typically around 180 psi for a healthy engine).
• If compression is low, further investigation is needed for potential internal engine issues.