DTC Detection Logic

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B2799

REAR AIR MIX DOOR MOT

Air mix door motor (rear) PBR position 95% or more

Air mix door motor (rear)
(PBR internal circuit is open or shorted)
Air mix door motor (rear) installation condition
A/C auto amp.
Harness and connector
(LIN communication line is open or shorted)

B279A

Air mix door motor (rear) PBR position 5% or less