Nissan Sentra B18 (2020-2025) Service Manual: U2141 Can Comm Err (tcm)

Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Audio, Visual & Navigation System :: Intelligent Around View Monitor System / Dtc/circuit Diagnosis / U2141 Can Comm Err (tcm)

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
U2141-87	CAN comm err (TCM) [Controller area network communication error (TCM)]	Diagnosis condition	Ignition switch ON
		Signal (terminal)	CAN communication signal
		Threshold	Communication error
		Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

CAN communication system (TCM)

FAIL-SAFE

Rear/front view is black screen (Bird-eye/Side view is displayed).
Rear view is not displayed even if shift lever is in R position.
MOD (Moving Object Detection) function does not operate.

Confirmation Procedure

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE
1. CONSULT
  1. Ignition switch ON.
  2. Ignition switch OFF and wait at least 30 seconds.
  3. Ignition switch ON and wait at least 30 seconds or more.
  4. Select “Self Diagnostic Result” mode of “AVM”.
  5. Check DTC.
Is DTC U2141–87 detected?
YES >>
Proceed to DTC Diagnosis Procedure.
NO >>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO >>
Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE AGAIN
1. CONSULT
  1. Ignition switch ON.
  2. Erase DTC.
  3. Perform DTC confirmation procedure again. Refer to Confirmation Procedure.
Is DTC U2141-87 detected again?
YES >>
Perform the trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow Chart.
NO >>
Inspection End.

Other materials:

Basic inspection
Diagnosis and repair workflow Workflow OVERALL SEQUENCE DETAILED FLOW 1.INTERVIEW CUSTOMER Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurred. >> GO TO 2. 2.SYMPTOM CHECK Verify symptoms. ...

P0130 A/F Sensor 1
DTC Logic DTC DETECTION LOGIC To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal fluctuates according to fuel feedback control. DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possi ...

Component Inspection
Component Inspection CHECK PARKING BRAKE SWITCH Check continuity between parking brake switch and switch case ground. ...