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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 198 (Engine Control System (DTCS) (5.6L) (3 Of 8)) >> DTC/Circuit Diagnosis >> U1040 Eng Comm Circuit >> DTC Description >> DTC Detection Logic

DTC Detection Logic

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

When ECM unable to transmit engine communication signal.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

U1040

Engine communication line

Diagnosis condition

Ignition switch ON

Signal (terminal)

LIN communication signal

Threshold

ECM unable to transmit engine communication signal

Diagnosis delay time

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