how to fix the P0302 code on my Toyota RAV4 XA40 (2013-2018)

Solution

1. Preparation

• Gather necessary tools: OBD-II scanner, multimeter, socket set, torque wrench, compression tester, and basic hand tools.
• Disconnect the battery to prevent electrical shorts.

2. Inspect Ignition Components

• Remove the Ignition Coil:
  • Use a socket set to remove the bolts securing the ignition coil on cylinder 2.
  • Carefully disconnect the electrical connector from the ignition coil.
• Inspect the Spark Plug:
  • Remove the spark plug using a spark plug socket.
  • Check the spark plug for wear, carbon buildup, or damage. Replace if necessary.
• Replace the Ignition Coil:
  • If the ignition coil appears to be faulty, replace it with a new one.

3. Check and Replace Fuel Injector

• Inspect Fuel Injector:
  • Disconnect the electrical connector and fuel line to the fuel injector for cylinder 2 (be cautious of fuel spillage).
  • Remove the fuel injector using appropriate tools.
• Test the Injector:
  • Use a multimeter to check for resistance or a noid light to verify operation while the engine is running.
• Replace Fuel Injector:
  • If the injector is faulty, replace it with a new one and ensure it is seated properly.

4. Compression Test

• Conduct Compression Test:
  • Install the compression tester into the spark plug hole of cylinder 2.
  • Crank the engine and record the compression reading.
  • Compare with manufacturer specifications; if low, investigate further for potential mechanical issues.

5. Reassemble and Final Checks

• Reinstall Components:
  • Reinstall the spark plug, ignition coil, and any components removed during diagnostics.
• Reconnect Battery:
  • Reconnect the battery and clear codes using the OBD-II scanner.