B1906

B1906 on Fiat — Cabin heating not working and temperature reading flashing

All the fault codes

Code B1906 reports a wiring fault on the cabin air blend motor. On the Fiat 500 1.3 Multijet with automatic climate control the heating stays off and the temperature display flashes.

System
Air conditioning
Component
Air conditioning air duct
Fault
Cabin heating inactive and the temperature reading on the display flashing.
Typical symptoms
  • The cabin heating does not work
  • The temperature reading flashes on the display
Vehicles affected
  • Fiat 500 1.3 Multijet — vehicles with automatic climate control
Main code
  • B1906 Cabin air blend motor, wiring fault
Related codes
  • B1902 Cabin air distribution motor, wiring fault
  • B1905 Cabin air blend motor feedback signal, wiring fault

On this fault the diagnostic tool often returns several codes together.

Solution

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The cause and the repair are on Sema Repair

On Sema Repair this code is linked to verified case studies, with the confirmed cause case by case, the job step by step, indicative times, the manufacturer's notes and a photograph of the component with the point of intervention highlighted.