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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (4 Of 4)) >> DTC/Circuit Diagnosis >> U0284 Active Grille Shutter >> DTC Description >> PR25DD engine >> DTC Detection Logic

DTC Detection Logic

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When ECM cannot receive the engine communication signal from active grille shutter.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

U0284

00

LOST COMM (A/GRLL SHTTR MDL A)

(Lost communication with active grille air shutter module A)

Diagnosis condition

Ignition switch ON

Signal (terminal)

Engine communication signal

Threshold

ECM cannot receive the engine communication signal from active grille shutter

Diagnosis delay time

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