OBDII Code List

U0140 2012 NISSAN SENTRA - Lost Commuinication With BCM

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

    • CAN communication line between BCM and ECM (CAN communication line is open or shorted)

When is the code detected?

When ECM is not transmitting or receiving CAN communication signal of OBD (emission related diagnosis) with BCM for 2 seconds or more.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U0140 2012 Nissan Sentra Description

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
OBDII Code U0140 2012 Nissan Sentra - Lost Commuinication With BCM -

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U0140 2012 NISSAN SENTRA Comments

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