Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0073 control module communication bus off

Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h6do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0073 control module communication bus off

NOTE:

For the diagnostic procedure, refer to LAN section. Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

Detect malfunction of CAN communication.

Judge as NG when CAN communication failure has occurred.

2. COMPONENT DESCRIPTION

(Common Specifications)

CAN Protocol 2.0 B (Active)

Frame Format: 11 Bit ID Frame (Standard Frame)

Conforms to ISO11898

Communication Speed: 500 kbps

3. EXECUTION CONDITION

Secondary Parameters	Execution condition
Battery voltage	≥ 10.9 V

4. GENERAL DRIVING CYCLE

Perform the diagnosis continuously after starting the engine.

5. DIAGNOSTIC METHOD

Judge as NG when the following conditions are established.

Judgment Value

Malfunction Criteria	Threshold Value
CAN bus condition	= Bus off

Time Needed for Diagnosis: 436 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

Dtc p0851 park/neutral switch input circuit low

DTC DETECTING CONDITION:Detected when two consecutive driving cycles with fault occur.TROUBLE SYMPTOM:Improper idlingCAUTION:After servicing or replacing faulty parts, perform Clear Memory Mode Clear ...

Dtc u0423 invalid data received from instrument panel cluster control module

NOTE:For the diagnostic procedure, refer to LAN section. Basic Diagnostic Procedure1. OUTLINE OF DIAGNOSISNOTE:For the detection standard, refer to DTC U0402. Diagnostic Procedure with Diagnostic Tr ...

Other materials:

Dtc b1000 airbag ecu malfunction
DIAGNOSIS START CONDITION:Ignition voltage is 10 V to 16 V.DTC DETECTING CONDITION:Airbag control module is faulty.CAUTION:Before performing diagnosis, refer to “CAUTION” in “General Description”. General Description > CAUTIONSTEPCHECKYESNO1.CHECK DTC.Read the DTC. (Current ...