Nissan Versa (N17): U0073 Communication bus a off

Nissan Versa 2nd generation (N17) Service Manual / Transmission & driveline / Transaxle & transmission (TM) / U0073 Communication bus a off

DTC Logic

DTC Trouble diagnosis name DTC detecting condition Possible causes
U0073

Control Module Communication Bus "A" Off

 When the ignition switch is ON, TCM detects a bus-off error continuously for 2 seconds or more. Harness or connector (CAN communication line is open or shorted)

DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE WORK

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

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Start engine and wait for at least 5 seconds.
  2. Check the DTC.

Is "U0073" detected?

YES >> Go to TM, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

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

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U0100 Lost communication (ECM A)

DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes U0100 Lost Communication With ECM/PCM "A" When the ignition switch ...

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