how to fix P0302 code in Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent any electrical hazards.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, dielectric grease
• Remove the ignition coil from cylinder 2 by unscrewing the bolts and disconnecting the electrical connector.
• Remove the spark plug using a socket wrench.
• Inspect the spark plug for fouling, wear, or damage; replace if necessary. Use a new spark plug with the correct gap.
• Apply a small amount of dielectric grease to the ignition coil connector before reinstallation.

3. Inspect and Replace Ignition Coil

• If the spark plug is in good condition, inspect the ignition coil for cracks or signs of failure.
• Tools Required: Socket set
• Remove the faulty ignition coil and replace it with a new one, ensuring it is securely attached.

4. Check and Clean Fuel Injector

• If misfire persists, check the fuel injector for cylinder 2.
• Tools Required: Fuel injector cleaning kit or replacement injector
• Disconnect the fuel line and electrical connector from the injector.
• Remove the injector from the rail and inspect for clogs or damage.
• Clean the injector or install a new one if necessary.

5. Verify Engine Compression

• If misfire continues, check the compression of cylinder 2.
• Tools Required: Compression tester
• Remove the spark plug and screw in the compression tester.
• Crank the engine and record the compression reading. Compare to specifications (typically around 180-220 psi).
• If compression is low, further investigation into valves or piston rings may be necessary.