why is my Genesis G70 check engine light on and won’t go off

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Replace Faulty Components

• If codes indicate a faulty sensor:

  1. Identify the faulty sensor from the OBD-II error codes.
  2. Remove the sensor using an appropriate socket or wrench.
  3. Install the new sensor, tightening to manufacturer specifications (consult service manual for torque values).

• If spark plugs or ignition coils are faulty:

  1. Remove the ignition coil cover if applicable.
  2. Disconnect the electrical connector from the ignition coil.
  3. Remove the ignition coil and inspect for cracks or carbon tracking.
  4. Replace any faulty ignition coils.
  5. Remove old spark plugs using a spark plug socket, and replace with new ones, ensuring proper gap settings.

3. Clear Error Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the error codes.
• Start the engine and check if the check engine light remains off.