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.

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:

    Rear Bumper
    Exploded View Exploded View EXCEPT FOR SR 1. Rear bumper side bracket (LH) 2. Rear bumper reinforcement support (L ...

    INSTALLATION. Sonar Buzzer. Removal and Installation
    CAUTION: Verify that the connector direction is within the specification shown when assembling the bumper fascia. (A) : Horizontal position (a) ...

    Normal Operating Condition
    Symptom Description Symptom Description FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED) If the status of that the engine speed is above 2,500 rpm under no load (at 0 km/h and the selector lever position is P or N) takes more than the specified time, fuel will be cut off after s ...