FAULTBASE
NEWSASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Honda/Accord/10th Generation (2018-2022)/why is my Honda Accord AC not blowing cold air

why is my Honda Accord AC not blowing cold air

Honda Accord 10th Generation (2018-2022)

Severity: mediumDifficulty: medium2-4 hours
3 min read
572 words

Problem Statement

Learn how to diagnose and fix AC not blowing cold air in Honda Accord. Step-by-step guide with diagnostic procedures and repair instructions.

Component
HVAC
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool before performing repairs on the AC compressor.

Symptoms

  • •AC compressor not engaging
  • •Warm air blowing from vents
  • •Unusual noises from the AC system
  • •Foul or musty odors when AC is on
  • •AC performance fluctuating or inconsistent

Diagnostic Steps

  1. 1Check the AC system for any visible leaks around the compressor and hoses.
  2. 2Use an OBD-II scanner to check for any error codes related to the AC system.
  3. 3Inspect the AC compressor for proper operation and engagement.
  4. 4Measure the refrigerant pressure using a manifold gauge set to ensure it’s within specifications.
  5. 5Check the AC relays and fuses for continuity and proper function.
  6. 6Inspect the cabin air filter for clogs that might restrict airflow.

Solution

Solution

1. Preparation

  • Gather tools and parts needed for the repair.
  • Ensure the vehicle is parked on a level surface and the engine is turned off.
  • Disconnect the battery to prevent electrical issues during repair.

2. Recharge the AC System

  • Locate the low-pressure service port on the AC system.
  • Connect the refrigerant canister to the manifold gauge set.
  • Open the valve on the canister and allow refrigerant to flow into the system until the recommended pressure is reached (usually around 30-40 psi).
  • Monitor the gauge to avoid overcharging.
  • Disconnect the refrigerant canister when finished.

3. Replace Faulty Components

  • If the compressor is not engaging, check the clutch for wear. Replace the AC compressor if necessary.
    • Tools Required: Socket set, torque wrench, AC compressor replacement kit.
    • Sub-steps:
      1. Remove any components obstructing access to the compressor.
      2. Disconnect the electrical connector and refrigerant lines from the old compressor.
      3. Install the new compressor, ensuring proper torque specifications for bolts (consult repair manual).
  • If the cabin air filter is clogged, remove and replace it.
    • Sub-steps:
      1. Locate the cabin air filter housing.
      2. Remove the cover and take out the old filter.
      3. Install the new filter, ensuring proper orientation.

4. Test System Operation

  • Reconnect the battery and start the engine.
  • Turn on the AC and set it to the coldest setting.
  • Check if the airflow is cold and consistent.
  • Observe for any abnormal noises or odors.

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
  • Socket set
  • Torque wrench
  • Refrigerant canister

Parts Required

  • AC refrigerant
  • AC compressor (if faulty)
  • Cabin air filter (if clogged)

Additional Information

Component

HVAC

Repair Time

2-4 hours

Difficulty

medium

Severity

medium

Tools

5 items

Parts

3 items

Related Faults

Discover similar issues

  1. my Honda Accord lights flicker when I turn on the AC what's wrong

    Learn how to diagnose and fix flickering lights when AC is on in Honda Accord. Step-by-step guide with diagnostic procedures and repair instructions.

    Component:Electrical
    Symptoms
    • •Flickering dashboard lights
    • •Dim headlights when AC is activated
    • +{count} more
  2. my Honda Accord shakes when braking what could be wrong

    Learn how to diagnose and fix braking vibration issues in the 2018 Honda Accord. Step-by-step guide with symptoms, diagnostic steps, and repair instru...

    Component:Brakes
    Symptoms
    • •Steering wheel vibration during braking
    • •Pulsation felt in the brake pedal
    • +{count} more
  3. my Honda Accord transmission hesitates when shifting into gear what’s the issue

    Learn how to diagnose and fix transmission hesitation in Honda Accord. Step-by-step guide with diagnostic procedures and repair instructions.

    Component:Transmission
    Symptoms
    • •Hesitation during gear shifts
    • •Slipping transmission
    • +{count} more
  4. my Honda Accord battery light is on what does it mean

    Learn how to diagnose and fix the battery light issue in Honda Accord. Step-by-step guide with diagnostic procedures and repair instructions.

    Component:Electrical
    Symptoms
    • •Battery warning light illuminated on the dashboard
    • •Dimming headlights or interior lights
    • +{count} more
  5. how to fix my Honda Accord AC that’s blowing warm air

    Learn how to diagnose and fix your Honda Accord AC blowing warm air. Step-by-step guide with symptoms, diagnostic steps, tools, and repair instruction...

    Component:HVAC
    Symptoms
    • •Warm air blowing from the AC vents
    • •AC compressor not engaging
    • +{count} more
  6. my Honda Accord ABS light is on and traction control disabled what should I do

    Learn how to diagnose and fix ABS light issues and traction control disablement in Honda Accord. Step-by-step guide with diagnostic procedures and rep...

    Component:Brakes
    Symptoms
    • •ABS warning light illuminated on the dashboard
    • •Traction control warning light illuminated or system disabled
    • +{count} more

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