what does a P0302 code mean for my Toyota Camry

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

1. Remove the ignition coil for cylinder 2.
   • Tools: Socket set, ratchet, and extension.
2. Remove the spark plug using a spark plug socket.
   • Inspect for signs of wear, such as fouling or excessive gap.
3. If the spark plug is damaged, replace it with a new one, ensuring it is gapped according to specifications (usually around 0.043 inches for most Toyota models).
   • Torque to manufacturer specifications (typically around 13 lb-ft).

3. Check and Replace Ignition Coil

1. Test the ignition coil operation by swapping it with a functioning cylinder.
2. If misfire moves to the swapped cylinder, replace the ignition coil for cylinder 2.
   • Tools: Socket set and torque wrench.
3. Install the new ignition coil and ensure proper connection.

4. Inspect and Replace Fuel Injector

1. Disconnect the fuel rail and remove the fuel injector for cylinder 2.
   • Tools: Fuel line disconnect tool, socket set.
2. Test the injector for resistance with a multimeter (consult specifications for proper range).
3. If faulty, replace the fuel injector and reassemble the fuel rail.
   • Make sure to lubricate O-rings with clean engine oil before installation.

5. Compression Test (if necessary)

1. Remove the spark plug from cylinder 2.
2. Insert the compression gauge into the spark plug hole and crank the engine.
3. Record the pressure reading; compare it to manufacturer specifications.
4. If readings are low, further diagnosis of internal engine components may be necessary.