B3782 Code – Air Flow Control 10 Feedback Circuit Malfunction

What are the Possible Causes of the OBD2 Code B3782?

  • Faulty Auxiliary Mode Actuator
  • Auxiliary Mode Actuator harness is open or shorted
  • Auxiliary Mode Actuator circuit poor electrical connection
  • Faulty Auxiliary Heating, Ventilation, and Air Conditioning (HVAC) Control Module


Need help with this code? Our mechanics are available within west Michigan to help. Outside of our service area?

Visit our Car Help Section where you can ask questions and get answers. Our community and our technicians are here to help you.

Recommended Diagnostic Tools

Foxwell NT301 Scanner an affordable entry level scan tool that supports live data
Foxwell NT624 a mid-level DIY tool with common bi-directional service features
TOPDON ArtiDiag a bi-directional support and FCA Gateway Bypass
Autel Maxisys MS906 Pro-TS a Professional Level Scan Tool

Crenova 890Z a low-cost Digital Multimeter (DMM) for the DIYer, includes standard probes and aligator clips
Autory 104PCS Automotive Circuit Test Leads Kit – a great way to expand your DMMs functionality.

Leave a Reply