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Home/DTC Codes/Toyota/4Runner/2003-2009 4.7L V8/B0661
B0661

Rear HVAC Temperature Control Circuit

2003-2009 Toyota 4Runner 4.7L V8

Low SeverityBodyGeneric (SAE)

Description

Malfunction in the rear HVAC temperature control actuator or circuit.

Symptoms

  • Rear climate stuck on hot or cold
  • Rear temperature not adjusting
  • Clicking from rear HVAC unit

Common Causes

  • Faulty rear blend door actuator
  • Rear HVAC control module fault
  • Wiring issue
  • Blend door binding

Diagnostic Steps

  1. Test rear blend door actuator
  2. Check rear HVAC control module
  3. Inspect wiring
  4. Scan for rear HVAC codes

Repair Notes

Replace rear blend door actuator or rear HVAC control module.

Related Codes

B0622Blend Door Actuator Circuit - Driver SideB0660Rear HVAC Blower Motor Circuit

Other Body Codes

B0661 on Other Vehicles

Toyota 4Runner

2003-2009 4.0L V6

Toyota 4Runner

2010-2024 4.0L V6

Toyota 86

2017-2020 2.0L H4

Toyota Alphard

2023-2025 2.4L I4 Turbo T24A-FTS

Toyota Alphard

2023-2025 2.5L I4 Hybrid A25A-FXS

Toyota Altezza

1998-2005 2.0L I4 3S-GE BEAMS

Toyota Altezza

1998-2005 2.0L I6 1G-FE

Toyota Aqua

2011-2021 1.5L I4 Hybrid 1NZ-FXE

Common Questions

What does code B0661 mean on a 2003-2009 Toyota 4Runner?

B0661 stands for "Rear HVAC Temperature Control Circuit". Malfunction in the rear HVAC temperature control actuator or circuit.

What are the symptoms of B0661 on a Toyota 4Runner?

Common symptoms of B0661 include: Rear climate stuck on hot or cold, Rear temperature not adjusting, Clicking from rear HVAC unit.

What causes B0661 on a 2003-2009 Toyota 4Runner?

Common causes of B0661 include: Faulty rear blend door actuator, Rear HVAC control module fault, Wiring issue, Blend door binding.

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