how to fix P0301 misfire code in Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Disconnect the battery to ensure safety.
• Allow the engine to cool down before starting the work.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Locate the spark plug for cylinder 1.
  3. Use a spark plug socket to carefully remove the old spark plug.
  4. Inspect the spark plug socket for carbon buildup and clean if necessary.
  5. Install the new spark plug, hand-tightening first, then torque to manufacturer specifications (typically 22 lb-ft for VW).

3. Replace Ignition Coil

• Sub-steps:
  1. Disconnect the wiring harness from the ignition coil.
  2. Remove the ignition coil bolt using a socket set.
  3. Pull the ignition coil out of the cylinder head.
  4. Install the new ignition coil by reversing the removal steps and ensure proper fitment.

4. Inspect or Replace Fuel Injector

• Sub-steps:
  1. Remove the intake manifold (if necessary) to access the fuel injector.
  2. Disconnect the fuel injector connector.
  3. Remove the fuel rail bolts and gently pull the fuel rail off to access the injector.
  4. Inspect the fuel injector for clogs; clean or replace as necessary.
  5. Reinstall the fuel rail and reconnect everything.