what does it mean if my Ram 1500 DT (2019-Present) has a P0302 code?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2 using a socket set.
• Take out the spark plug and visually inspect it for wear or damage.
• If damaged, replace the spark plug with a new one (refer to manufacturer specifications for the correct type).
• Reinstall the ignition coil, ensuring it is securely connected.

3. Test and Replace Ignition Coil (if necessary)

• If the spark plug is intact, test the ignition coil using a multimeter for resistance (refer to the service manual for specifications).
• If the coil fails the test, remove it and replace it with a new one.
• Reconnect the electrical connector and ensure it is secure.

4. Inspect Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Use a multimeter to check the resistance of the injector (consult service manual for specifications).
• If the injector is faulty, remove it and replace it with a new injector.
• Reconnect the fuel injector connector.

5. Check Compression

• If misfire persists, perform a compression test on cylinder 2.
• If compression is below manufacturer specifications, further investigation into engine internals may be required (e.g., valve issues, head gasket).