Blend Door Actuator Replacement – Stuck Heat or A/C Fix

Is your 2003–2006 Honda Civic stuck blowing only hot or only cold air? This DIY Honda Civic HVAC repair shows how to replace the air temperature blend door actuator (heater blend door motor) step by step so you can fix your temperature control and get your heater and A/C working again, even if your Civic is stuck on hot or stuck on cold air. In this close up DIY Honda Civic blend door actuator repair, you’ll see the exact location of the blend door motor, how to remove the old actuator, install the new replacement part, and run the built in HVAC self test to confirm the fix. No guesswork, no fluff—just clear visuals, real world tips, and a straightforward heater and A/C repair you can do at home to avoid expensive dealership costs. You’ll learn: • Symptoms of a bad Honda Civic blend door actuator and common HVAC temperature control problems • How to run the HVAC self diagnostic test on a 2003–2006 Honda Civic and read trouble codes • How to remove and replace the air temperature blend door motor safely without breaking clips or panels • How to test the new blend door actuator before reassembling the dash so your heater and A/C work correctly again 📹 Watch for tips to avoid breaking clips or scratching panels. HVAC TROUBLE CODES: 7 – An Open in the Air Mix Control Motor Circuit. 8 – A Short in the Air Mix Control Motor Circuit. 9 – A Problem in the Air Mix Control Linkage, Door, or Motor. 10 – An Open or Short in the Mode Control Motor Circuit. 11 – A Problem in the Mode Control Linkage, Doors, or Motor. 12 – A Problem in the Blower Motor Circuit. 14 (With A/C) – An Open in the Evaporator Temperature Sensor Circuit. 15 (With A/C) – A Short in the Evaporator Temperature Sensor Circuit. 📦 Replacement Part Used: Main Temperature Heater Blend Door Actuator for 04-06 Honda CR-V Civic 604-939 https://ebay.us/m/hhK1kh 🧰 Tools & Supplies Used: • BAUER – Impact Rated Hex Shank Socket Driver https://www.harborfreight.com/impact-... • BRAUN – 500 Lumen LED Rechargeable Magnetic Handheld Foldable Slim Bar Work Light https://www.harborfreight.com/lightin... • CRAFTSMAN Socket Set, 24-Piece, 1/4 Inch Drive, Metric, Includes Storage Case (CMMT12110LZ) https://a.co/d/aMgw5Sx • DeWALT - DCF887D1E1 20V MAX XR 1/4 in. 3-Speed Cordless Impact Driver https://www.dewalt.com/product/dcf887... 🎥 Filming Gear: • iPhone 15 Pro https://www.apple.com/iphone-15-pro/ • UBEESIZE 67” Camera Tripod https://a.co/d/3RqFglI • AirPods Pro 2 📽 Chapters: 00:00 – Introduction 00:10 – Symptoms 00:36 – HVAC Self-Test 02:05 – Trouble Codes 02:14 – Original Issue 04:25 – Replacement Part 05:35 – Removal 08:13 – Testing New Part 10:25 – Installing New Part 15:14 – Final Test 16:05 – Thank You for Watching 👍 If this helped, like the video and subscribe for more diagnostic-first repairs:    / @wes_barton   🔔 Hit the bell so you never miss an upload. ☕ If this saved you time, money, or a headache, buy me a coffee — it keeps the repairs coming: http://buymeacoffee.com/WesBarton 💬 Questions? Drop them in the comments — I read every one. 💡 Video idea? Reach me at [email protected]