how to address P0302 misfire code in my Ram 1500 DT (2019-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface with the engine off and cooled down.
• Disconnect the negative battery terminal for safety.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 2 by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using the spark plug socket.
• Inspect the spark plug for damage; if worn or fouled, replace with a new one (specify gap if required).
• Torque the new spark plug to the manufacturer’s specification (typically around 13-15 ft-lbs).
• Reinstall the ignition coil, ensuring the connector is securely attached.

3. Check and Replace Ignition Coil (if necessary)

• If the ignition coil appears damaged or tests faulty, replace it.
• Tools Required: Socket set, torque wrench.
• Remove the faulty ignition coil by unbolting it and disconnecting the electrical connector.
• Install the new ignition coil and bolt it into place, torquing to manufacturer specifications.

4. Inspect and Clean/Replace Fuel Injector (if necessary)

• Check the fuel injector for proper operation; replace if malfunctioning.
• Tools Required: Fuel injector puller (if needed), sealant, wrenches.
• Disconnect the fuel line and electrical connector from the fuel injector.
• Remove the fuel injector and inspect O-rings; replace if damaged.
• Install the new or cleaned injector, ensuring proper seating and sealing.