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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, anti-seize compound.
• Remove the ignition coil from cylinder 1 by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket.
• Inspect the old spark plug for damage and replace it with a new spark plug, using anti-seize compound on the threads.
• Torque the new spark plug to the manufacturer’s specification (usually around 13-15 ft-lbs).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set.
• If the ignition coil is found to be faulty during the diagnostic, replace it by unbolting it from its mounting.
• Disconnect the electrical connector and install the new ignition coil.
• Reconnect the electrical connector and ensure it is securely fastened.

4. Test and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, socket set.
• If the fuel injector is determined to be malfunctioning, relieve the fuel system pressure before removal.
• Disconnect the fuel injector electrical connector and remove the retaining clips.
• Pull out the old fuel injector and install the new one, ensuring to lubricate the O-rings with engine oil for a proper seal.
• Reconnect the electrical connector and securing clips.

5. Final Checks

• Reconnect the negative battery terminal.
• Clear the check engine codes using the OBD-II scanner.
• Start the engine to ensure it is running smoothly without misfires.