why does my Honda Accord 9th Generation (2013-2017) make a hissing noise when AC is on

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

549 words

Problem Statement

Learn how to diagnose and fix the hissing noise when AC is on in Honda Accord 9th Generation (2013-2017). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems
•Allow the engine to cool before working on the AC components to avoid burns

Symptoms

•Hissing noise when AC is on
•Reduced cooling performance
•Possible increase in cabin humidity
•AC compressor cycling on and off frequently
•Ice buildup on AC components

Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Visually inspect AC components for signs of damage or leaks
3
Listen closely around the AC compressor and condenser while the AC is running
4
Check the refrigerant level using a manifold gauge set
5
Inspect the expansion valve or orifice tube for blockages or malfunctions
6
Examine the cabin air filter to ensure it is not clogged

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Manifold gauge set
•Refrigerant recovery machine
•Socket set
•Screwdrivers

Parts Required

•AC hoses (if damaged)
•Expansion valve or orifice tube (if blocked)
•AC compressor (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Visually inspect AC components for signs of damage or leaks
3
Listen closely around the AC compressor and condenser while the AC is running
4
Check the refrigerant level using a manifold gauge set
5
Inspect the expansion valve or orifice tube for blockages or malfunctions
6
Examine the cabin air filter to ensure it is not clogged

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface with the engine off.
Disconnect the battery to prevent electrical mishaps.

2. Recover Refrigerant

Use a refrigerant recovery machine to safely remove the refrigerant from the AC system.
Follow manufacturer guidelines for refrigerant recovery.

3. Inspect and Replace Components

Inspect AC Hoses:
- Remove any covers to access the AC hoses.
- Examine for visible cracks, wear, or leaks.
- Replace any damaged hoses with compatible parts.
Check the Expansion Valve/Orifice Tube:
- Locate the expansion valve or orifice tube per the service manual.
- Remove and inspect for blockages; clean or replace as necessary.
Compressor Inspection:
- Check the AC compressor for signs of internal failure or refrigerant leaks.
- If faulty, replace the compressor with a new unit.

4. Recharge the AC System

Reconnect all hoses and components securely.
Recharge the AC system with the appropriate type and amount of refrigerant according to specifications.

5. Test the System

Reconnect the battery, start the vehicle, and turn on the AC to the maximum setting.
Monitor the system for proper operation and listen for any abnormal noises.