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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Multi Av System (NAVI With BOSE) (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC U121F: Av Control Unit >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

U121F

DISPLAY CONTROL UNIT

(Display Control Unit)

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

-

Threshold

AV control unit internal malfunction

Diagnosis delay time

30 seconds or more