S Nissan Sentra Manuals Library
Factory-style information for owners and repair work

Nissan Sentra techinfo

Find Nissan Sentra owner information, maintenance instructions, technical references, service procedures and useful repair pages in one clean online library.

Quick access Sentra Docs
B18 Owner's 2020-2025 Sentra owner information B18 Service 2020-2025 Sentra Workshop manual B17 Owner's 2013-2019 Sentra owner documentation B17 Service 2013-2019 Sentra service information

Nissan Sentra B18 (2020-2025) Service Manual: U0073-00 Can Comm Circuit

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

U0073

00

COMM BUS A OFF

(Control Module Communication Bus A Off)

Diagnosis condition

When the ignition switch is ON

Signal

CAN communication signal

Threshold

TCM communication blockage (Communication not established)

Diagnosis detection time

2 seconds

POSSIBLE CAUSE

Harness or connector (CAN communication line is error)

FAIL-SAFE

  • Selector shock is large

  • Start is slow

  • Acceleration is slow

  • Lock-up is not performed

  • Stop/start system prohibited

DTC CONFIRMATION PROCEDURE

  1. PREPARATION BEFORE WORK

    If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 10 seconds, then perform the next test.

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is more than 10 V.

    >>

    GO TO 2.

  2. CHECK DTC DETECTION

    1. Start the engine and wait for at least 2 seconds.

    2. Check the DTC.

    Is "U0073-00" detected?

    YES >>

    Proceed to Diagnosis Procedure.

    NO-1>>

    To check malfunction symptom before repair: Refer to Intermittent Incident.

    NO-2>>

    Confirmation after repair: INSPECTION END

Diagnosis Procedure

Diagnosis Procedure

For the diagnosis procedure, refer to Trouble Diagnosis Flow Chart.

    U0287-00 Lost Communication (electric Oil Pump)
    Dtc Description DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition U0287 00 LOST COMM (T/M FLUID PUMP A) (Lost Comm...

    Other materials:

    C1712-7a Low Tire Pressure Fr
    Dtc Description DTC Description Note: The Signal Tech II Tool [– (NI-50190)] can be used to perform the following functions: Refer to the Signal Tech II User Guide for additional information. Activate and display TPMS sensor IDs Display tire pressure rep ...

    Operation
    Switch Name and Function Switch Name and Function STEERING SWITCH The steering switch is located on the steering wheel. Transmits the steering switch signal to the combination meter. ...

    High Pressure Fuel Pump
    Component Function Check Component Function Check CHECK HIGH PRESSURE FUEL PUMP FUNCTION With CONSULT Start engine. Select “FUEL PRES SEN V” in “DATA MONITOR” mode of “ENGINE” usi ...