why does my Ram 1500 DT (2019-Present) check engine light keep coming on

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, basic hand tools
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to avoid electrical shorts.

2. Addressing Error Codes

• Sub-steps:
  1. Reconnect the battery terminal and turn the ignition to the ON position without starting the engine.
  2. Use the OBD-II scanner to retrieve and note down all stored trouble codes.
  3. Research each code to determine the specific repairs needed (e.g., replace faulty sensor, repair exhaust leaks).

3. Inspecting and Repairing Components

• Sub-steps:
  1. Check and replace the gas cap if it is cracked or does not seal properly.
  2. Replace any damaged spark plugs or ignition coils as indicated by diagnostic codes.
  3. Clean or replace the mass airflow sensor (MAF) if required.
  4. Inspect and replace damaged hoses in the air intake system.

4. Resetting the Check Engine Light

• Sub-steps:
  1. After completing repairs, use the OBD-II scanner to clear the error codes.
  2. Perform a short test drive to ensure the repairs are effective.