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why does my Honda Civic 9th Generation (2012-2015) AC stop blowing cold air - Honda Civic
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why does my Honda Civic 9th Generation (2012-2015) AC stop blowing cold air

Honda Civic 9th Generation (2012-2015)

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

Problem Statement

Learn how to diagnose and fix AC not blowing cold air in Honda Civic 9th Generation (2012-2015). 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 wear safety goggles and gloves when handling refrigerants.
  • •Disconnect the battery before working on any electrical components.

Symptoms

  • •No cold air blowing from the AC vents
  • •AC compressor not engaging
  • •Unusual noises from the AC system
  • •Warm air blowing from the vents when AC is activated
  • •Increased humidity inside the vehicle

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

  • •OBD-II scanner
  • •Manifold gauge set
  • •Multimeter
  • •Socket set
  • •Wrench set
  • •Screwdrivers

Parts Required

  • •R-134a refrigerant
  • •AC compressor relay (if faulty)
  • •Cabin air filter (if clogged)
  • •AC compressor (if damaged)

Additional Information

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

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Solution
1. Preparation
  • Gather tools and parts needed for the repair.
  • Ensure the vehicle is parked on a level surface.
  • Disconnect the negative battery terminal to prevent electrical hazards.
2. Check and Recharge Refrigerant
  • Tools Required: Manifold gauge set, refrigerant (R-134a), safety goggles, gloves.
  • Attach the manifold gauges to the AC service ports.
  • Check the high and low-pressure readings; if low, proceed to recharge.
  • Connect the refrigerant can to the low-pressure side and open the valve slowly to add refrigerant.
  • Monitor the pressure and do not overcharge; the low side should be around 25-40 psi and the high side around 150-200 psi based on ambient temperature.
3. Inspect and Replace AC Components
  • Tools Required: Socket set, wrench set, screwdrivers.
  • If the compressor is not engaging, locate the AC relay and check for continuity using a multimeter; replace if faulty.
  • Inspect the AC compressor clutch for wear; replace the compressor if it is damaged.
  • If the cabin air filter is clogged, remove and replace it to improve airflow.
4. Test and Reassemble
  • Reconnect the battery terminal.
  • Start the vehicle and turn on the AC to test for cold air.
  • Ensure all components are reassembled correctly and check for any leaks around the service ports.