why does my Honda Accord 9th Generation (2013-2017) AC blow hot air?

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

575 words

Problem Statement

Learn how to diagnose and fix AC blowing hot air in Honda Accord 9th Generation. 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

•Disconnect the battery before working on electrical systems.
•Handle refrigerant with care, as it can be hazardous to health.

Symptoms

•AC system not providing cool air
•Unusual noises when the AC is running
•AC compressor not engaging
•Increased cabin temperature
•Moisture or refrigerant smell from vents

Diagnostic Steps

1
Check the AC system for basic operation by adjusting the temperature settings and observing the response.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Inspect the AC compressor visually for any signs of damage or leaks.
4
Measure the ambient temperature of the air entering and exiting the AC vents with a thermometer.
5
Check refrigerant levels using a refrigerant gauge to see if they are within the manufacturer's specifications.
6
Inspect the cabin air filter for clogs or blockages that might restrict airflow.

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

•Socket set
•AC manifold gauge set
•Vacuum pump
•Refrigerant
•Screwdriver set
•Multimeter

Parts Required

•AC compressor (if faulty)
•Cabin air filter
•Refrigerant

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the AC system for basic operation by adjusting the temperature settings and observing the response.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Inspect the AC compressor visually for any signs of damage or leaks.
4
Measure the ambient temperature of the air entering and exiting the AC vents with a thermometer.
5
Check refrigerant levels using a refrigerant gauge to see if they are within the manufacturer's specifications.
6
Inspect the cabin air filter for clogs or blockages that might restrict airflow.

Solution

1. Preparation

Gather tools and materials needed for the repair.
Disconnect the battery to ensure safety while working on electrical components.
Tools Required: Socket set, AC manifold gauge set, vacuum pump, refrigerant, screwdriver set.

2. Check and Recharge Refrigerant

Connect the AC manifold gauges to the high and low-pressure ports on the AC system.
Start the engine and turn on the AC to the maximum setting.
Read the pressure levels; if low, proceed to recharge the system.
Use a vacuum pump to evacuate the system for 30 minutes to remove moisture.
Recharge the system with the appropriate amount of refrigerant (refer to the owner’s manual for the exact amount).

3. Inspect and Replace AC Compressor

If the compressor is not engaging, disconnect the electrical connector from the compressor.
Use a multimeter to check for voltage at the connector; if there’s no voltage, inspect the AC relay and fuse.
If the compressor is faulty, remove the serpentine belt and unbolt the compressor from the engine.
Install the new compressor and ensure all connections are tight and secure.

4. Replace Cabin Air Filter

Locate the cabin air filter compartment; it is typically behind the glove box.
Remove the glove box to access the filter.
Slide out the old cabin air filter and replace it with a new one, ensuring proper orientation.