why is my Honda Accord's engine light on

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical issues during repair.

2. Replace Faulty Components

• Diagnostic Trouble Codes (DTCs) Check:
  • If any codes indicate a specific sensor or component failure (e.g., oxygen sensor, catalytic converter), proceed with replacement.
• Ignition System Replacement:
  • If spark plugs or ignition coils are faulty:
    • Remove engine cover (if applicable) using a socket set.
    • Replace spark plugs with new ones (torque to manufacturer specifications).
    • Replace ignition coils by disconnecting the electrical connector and removing mounting bolts.

3. Fuel System Check

• If fuel injectors are suspected:
  • Use a fuel pressure gauge to check fuel rail pressure.
  • Remove and clean or replace injectors as needed (follow manufacturer's specifications for installation).

4. Emissions System Inspection

• If an oxygen sensor is faulty:
  • Locate the sensor in the exhaust system.
  • Disconnect the electrical connector and unscrew the sensor using an oxygen sensor socket.
  • Install the new sensor and reconnect the electrical connector.