how to fix a P0302 code on a Volkswagen Passat B8 (2015-2022)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shock.
• Ensure the engine is cool before starting work.

2. Inspect and Replace Ignition Components

1. Remove Engine Cover (if applicable)

   • Use a socket set to remove any bolts holding the engine cover in place.
   • Carefully lift the cover off and set it aside.

2. Remove Ignition Coil and Spark Plug

   • Disconnect the electrical connector from the ignition coil.
   • Use a socket wrench to remove the ignition coil bolt and carefully pull the coil out.
   • Use a spark plug socket to remove the spark plug from cylinder 2.
   • Inspect the spark plug for wear or damage.
   • If necessary, replace with a new spark plug (specifications: OEM recommended gap and type).

3. Check and Replace Fuel Injector (if needed)

1. Inspect Fuel Injector

   • Remove the fuel injector connector and use a noid light to check for signal.
   • If the injector is faulty, proceed to replace it.

2. Remove and Replace Fuel Injector

   • Disconnect the fuel line (use proper safety precautions to avoid fuel spillage).
   • Remove the retaining clips and carefully pull the fuel injector out.
   • Install the new injector and secure it with the clips.
   • Reconnect the fuel line and the injector connector.

4. Reassemble and Test

1. Reinstall Ignition Coil and Engine Cover

   • Place the ignition coil back into its position and secure it with the bolt.
   • Reconnect the electrical connector.
   • Replace the engine cover and tighten any bolts removed.

2. Reconnect Battery

   • Reconnect the negative battery terminal.