why does my Honda Civic have a strong odor when I turn on the AC

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety while working.
• Ensure the vehicle is parked on a level surface with the engine off.

2. Replace Cabin Air Filter

• Tools Required: Flathead screwdriver, replacement cabin air filter.
• Open the glove compartment and remove any contents.
• Locate the stops on both sides of the glove compartment and gently push them inward to allow the glove compartment to drop down.
• Remove the cover for the cabin air filter, typically located behind the glove compartment.
• Take out the old filter and inspect for mold or dirt.
• Insert the new cabin air filter (ensure the airflow direction matches the markings).
• Reassemble the cover and glove compartment.

3. Clean the AC Evaporator Core

• Tools Required: AC cleaner spray, soft brush.
• Locate the AC evaporator core access panel (often found under the dashboard).
• Remove the panel to access the evaporator.
• Spray the AC cleaner onto the evaporator core and allow it to sit for the recommended time.
• Use a soft brush to gently scrub any visible mold or debris.
• Allow the evaporator to dry completely before reassembling the access panel.

4. Clear the AC Drain Line

• Tools Required: Compressed air or a flexible cleaning tool.
• Locate the AC drain line, usually found under the vehicle near the firewall.
• Use compressed air to blow out any blockages in the drain line.
• If using a cleaning tool, gently insert it into the drain to clear any obstructions.