how to fix P0302 code in Toyota RAV4 Fifth Generation (2019-present)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket, ignition coil puller.
• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the electrical connector from the ignition coil for cylinder 2.
  3. Remove the ignition coil by unscrewing it and pulling it out.
  4. Remove the spark plug using a spark plug socket.
  5. Inspect the spark plug for wear and carbon deposits; replace if necessary.
  6. Install a new spark plug, torqueing it to the manufacturer’s specification (typically around 13-20 lb-ft).
  7. Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Clean or Replace Fuel Injector

• Tools Required: Fuel injector cleaning kit or new fuel injector, fuel line removal tool.
• Sub-steps:
  1. Disconnect the fuel line and electrical connector from the fuel injector for cylinder 2.
  2. Remove the fuel injector from the fuel rail.
  3. Clean the injector using a fuel injector cleaning kit or replace it with a new injector.
  4. Reinstall the injector and reconnect the fuel line and electrical connector.

4. Conduct Compression Test

• Tools Required: Compression gauge.
• Sub-steps:
  1. Remove the spark plug from cylinder 2.
  2. Insert the compression gauge into the spark plug hole.
  3. Crank the engine a few times to get a reading.
  4. Compare the reading to the manufacturer's specifications (typically around 180-200 psi).
  5. If compression is low, further diagnosis of piston rings or valves may be needed.