why does my Honda Civic 9th Generation (2012-2015) engine light keep coming on

Solution

1. Preparation

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

2. Retrieve and Analyze Codes

• Connect the OBD-II scanner to the vehicle's diagnostic port.
• Turn the ignition to the "ON" position without starting the engine.
• Retrieve and note any trouble codes displayed on the scanner.
• Use a repair manual or online resources to interpret the codes.

3. Inspect and Replace Components

A. Gas Cap

• Check if the gas cap is cracked or damaged.
• Replace with a new gas cap if necessary (correct part number per manufacturer).

B. Vacuum Hoses

• Locate vacuum hoses connected to the intake manifold.
• Replace any hoses that are cracked or disconnected.

C. Air Filter

• Remove the air filter housing cover.
• Inspect the air filter for dirt and debris.
• Replace the air filter if it is dirty.

4. Clear Codes and Test

• After replacing any faulty components, reconnect the OBD-II scanner.
• Clear the trouble codes from the vehicle's memory.
• Reconnect the negative battery terminal.

5. Test Drive

• Start the vehicle and let it idle for a few minutes.
• Take the vehicle for a short test drive to see if the engine light re-illuminates.