how to fix P0301 code on Porsche Cayenne E3 (2018-Present)

Learn how to diagnose and fix P0301 cylinder 1 misfire in Porsche Cayenne E3. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather all tools and parts needed for the repair.
• Disconnect the negative battery cable to avoid electrical shorts.
• Allow the engine to cool before starting work.

2. Replace Ignition Coil

• Tools Required: Socket set, torque wrench
• Remove the engine cover (if applicable).
• Disconnect the electrical connector from the ignition coil in cylinder 1.
• Remove the bolt securing the ignition coil using the socket set.
• Carefully pull the ignition coil out of the spark plug tube.
• Install the new ignition coil in reverse order and torque the bolt to the manufacturer's specification.

3. Replace Spark Plug

• Tools Required: Spark plug socket, torque wrench
• Using the spark plug socket, remove the spark plug from cylinder 1.
• Inspect the old spark plug for wear (replace if necessary).
• Gap the new spark plug to the manufacturer’s specification.
• Install the new spark plug and torque it to the recommended value.

4. Test Fuel Injector

• Tools Required: Fuel injector tester or noid light
• Disconnect the fuel injector electrical connector for cylinder 1.
• Connect the fuel injector tester or noid light to the connector.
• Crank the engine and observe the tester or light for proper pulsing. If not functioning, replace the injector.

5. Reassemble and Reconnect

• Reinstall any components removed during the repair, such as the engine cover.
• Reconnect the negative battery cable.