Nissan Sentra B18 (2020-2025) Service Manual: Dtc Description

Nissan Sentra B18 (2020-2025) Service Manual / Electrical & Power Control / Body Control System :: Dtc/circuit Diagnosis / U2153-87 Can Comm Err (hvac) / Dtc Description

DTC Description

DESCRIPTION

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-Nissan Sentra vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern Nissan Sentra vehicle is equipped with many electronic control unit, 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-High line, CAN-Low line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only. CAN Communication Signal Chart. Refer to CAN Communication Signal Chart.

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
U2153–87	CAN comm err (HVAC) [CAN communication error (HVAC)]	Diagnosis condition	Ignition switch ON
		Signal (terminal)	CAN communication signal
		Threshold	Transmission error or reception error
		Diagnosis delay time	2 second or more

POSSIBLE CAUSE

CAN communication system

FAIL-SAFE

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U2153-87 Can Comm Err (hvac)

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Dtc Confirmation Procedure

DTC Confirmation Procedure DTC CONFIRMATION CONSULT Ignition switch ON and wait for 2 seconds or ...

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