what does it mean when my Toyota Camry XV50 (2012-2017) has a P0302 code

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the engine is cool.
• Disconnect the negative battery terminal.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil from cylinder 2.
• Remove the spark plug using the spark plug socket.
• Inspect the spark plug for signs of wear (e.g., excessive gap, carbon deposits).
• If necessary, replace the spark plug with one that meets OEM specifications (typically NGK or Denso).
• Torque the new spark plug to the manufacturer’s specification (usually 13-16 lb-ft).

3. Test and Replace Ignition Coil

• Tools Required: Multimeter, socket set.
• Test the ignition coil for proper resistance using a multimeter (consult service manual for specifications).
• If faulty, replace the ignition coil with an OEM or equivalent part.
• Reinstall the ignition coil securely and reconnect the electrical connector.

4. Inspect Fuel Injector

• Tools Required: Fuel injector cleaner, basic hand tools.
• Remove the fuel injector from cylinder 2.
• Inspect for clogs or leaks.
• If necessary, clean the injector using a fuel injector cleaner or replace it with a new one.
• Reinstall the fuel injector ensuring proper sealing.

5. Compression Test

• Tools Required: Compression tester.
• Insert the compression tester into the spark plug hole of cylinder 2.
• Crank the engine a few times to get a reading.
• Compare the reading with specifications (typically around 180-200 psi).
• If compression is low, further diagnosis of the engine internals may be needed.

6. Final Assembly

• Reassemble any components removed during diagnosis.
• Reconnect the negative battery terminal.
• Clear the trouble codes with the OBD-II scanner.