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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 523 (Automatic Transmission (Re7R01B) (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC U0100: Lost Communication (ECM A) >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD and 2019 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

U0100

LOST COMM (ECM A)

(Lost Communication With ECM/PCM "A")

Diagnosis condition

When the ignition switch is ON

Signal

CAN communication signal

Threshold

TCM is unable to receive the CAN communications signal from ECM

Diagnosis delay time

Continuously for 2 seconds or more