how to fix the P0301 misfire code on my Ram 1500 DT (2019-Present)

Solution

1. Preparation

• Ensure the engine is cool and disconnect the negative battery terminal.
• Gather all necessary tools and parts.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket, dielectric grease.
• Remove the ignition coil from cylinder 1 by unbolting it and disconnecting the electrical connector.
• Remove the old spark plug using a spark plug socket.
• Inspect the spark plug for wear; if damaged or worn, replace it with a new one.
• Apply a small amount of dielectric grease to the spark plug threads and reinstall it, tightening to the manufacturer's specified torque (usually around 13-15 ft-lbs).

3. Replace Ignition Coil

• Tools Required: Socket set.
• If the spark plug is in good condition, proceed to inspect the ignition coil.
• Remove the ignition coil from cylinder 1 by unbolting it and disconnecting it from the electrical connector.
• Install the new ignition coil and reconnect the electrical connector, ensuring it clicks into place.

4. Check and Clean Fuel Injector

• Tools Required: Fuel injector cleaner, fuel pressure gauge (if necessary).
• If replacing the spark plug and ignition coil did not resolve the issue, check the fuel injector.
• Remove the fuel injector from cylinder 1 (may require removal of the intake manifold, depending on access).
• Clean the injector using a fuel injector cleaner or replace it with a new one if cleaning does not resolve the issue.
• Reinstall the injector, ensuring all connections are secure.

5. Reassemble and Reconnect

• Reattach any components removed during the process, including the intake manifold if applicable.
• Reconnect the negative battery terminal.