FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
my Honda Civic 9th Generation (2012-2015) AC blows hot air, what could be the issue? - Honda Civic
Home/Cars/Honda/Civic/9th Generation (2012-2015)/my Honda Civic 9th Generation (2012-2015) AC blows hot air, what could be the issue?

my Honda Civic 9th Generation (2012-2015) AC blows hot air, what could be the issue?

Honda Civic 9th Generation (2012-2015)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
569 words

Problem Statement

Learn how to diagnose and fix AC blowing hot air in Honda Civic 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.
  • •Allow the engine to cool before opening the AC system.

Symptoms

  • •AC system not cooling despite being turned on
  • •Unusual noises when AC is operating
  • •AC compressor not engaging
  • •Increased engine temperature
  • •Fogging of windows due to humidity

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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

  • •AC refrigerant
  • •Pressure gauge
  • •Manifold gauge set
  • •Socket set
  • •Wrench set
  • •Refrigerant recovery machine

Parts Required

  • •AC compressor
  • •Cabin air filter

Additional Information

Affected Component
HVAC
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
6 items
Parts Required
2 items

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation
Solution
1. Preparation
  • Gather tools and parts required for the repair.
  • Ensure the vehicle is parked on a level surface.
  • Disconnect the battery to prevent electrical shock.
2. Recharge AC System
  • Tools Required: AC refrigerant, pressure gauge, manifold gauge set.
  • Locate the low-pressure service port on the AC system.
  • Attach the manifold gauge set to the low-pressure port.
  • Check if the refrigerant is low; if so, add refrigerant until the appropriate pressure is achieved as indicated on the gauge.
  • Monitor the system while adding refrigerant to avoid overcharging.
3. Repair or Replace the AC Compressor (if necessary)
  • Tools Required: Socket set, wrench set, refrigerant recovery machine (if applicable).
  • Remove the serpentine belt from the AC compressor.
  • Disconnect electrical connectors and refrigerant lines from the compressor.
  • Remove bolts securing the AC compressor to the engine block and carefully remove the compressor.
  • Install the new or rebuilt compressor by reversing the removal steps. Ensure all connections are secure.
4. Inspect and Clean the AC Condenser
  • Tools Required: Hose and cleaning brush.
  • Remove any debris blocking the condenser.
  • Wash the condenser with water to remove dirt and insects that may hinder airflow.
  • Reassemble any components that were removed for access.
5. Replace Cabin Air Filter (if necessary)
  • Tools Required: None specific, but may need a screwdriver for some models.
  • Locate the cabin air filter housing, typically under the dashboard or behind the glove compartment.
  • Remove the old filter and install the new one, ensuring it is oriented correctly.