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OBD Error Code U0019

Low Speed CAN Communication Bus

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  • Hyundai Master
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Posted on Jan 02, 2017

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SOURCE: i have a 99 300m with the error code no bus on the

try to remove negative ground from battery or from jumpm start atachment. car should lose energy.. leave it 30 min.

or first u can try to turn on and off ignition key 3 times fast.. when i do that on my 300m on board says something "done" sory for bad english i hope i helped u..

Posted on Sep 25, 2009

ZJLimited
  • 17970 Answers

SOURCE: code u0008 high speed can communication bus (-)

U codes are reserved for future systems and may be proprietary to the manufacturer.

The CAN Bus allows 12 Volts, or other potential, power to be distributed around the vehicle (or system) on a single power rail with local actuators connecting the power to each application as needed. Vehicle functions such as temperatures , alarms or the positions of switches are monitored by sensors connected to the bus and the controller can direct the actuators to initiate the appropriate response as required.

Two variants are available to suit different transmission rates. A high speed (1 MBaud) bus is used for rapid control devices for operations such as engine management and vehicle stability and motion control. For simple switching and control of functions such as lighting, windows, mirror adjustment and instrument displays a low speed (100 KBaud) bus is used.

The CAN bus was designed to provide secure communications in the very harsh operating environments with high levels of electrical noise which are found in automotive systems.

The communications protocol defines the following:

  • Method of addressing the devices connected to the bus
  • Data word format (The message)
  • Priority setting
  • Transmission sequence
  • Control signals
  • Error detection
  • Error handling or correction
  • Transmission speed

The message data, the control signals and the error correction are contained in a data frames of equal length which are transmitted sequentially over the transmission channel.

Definitively, you need visit the dealer to know excalty is you have any problem with the software in your modules os any loss harnesses or wires there.

Additional details, onyl with the manufactured.

Hope this helps.

Posted on Jan 30, 2011

  • 1915 Answers

SOURCE: I am installing a VASCAR unit in a 2009 Ford

here are diagrams for OBDII pin locations-(page 33 of pdf. manual):

http://www.racelogic.co.uk/_downloads/vbox/CAN_Data_Documentation/CAN_BUS_LOCATION_GUIDE.pdf

Posted on Sep 01, 2011

GM Elec
  • 1000 Answers

SOURCE: u0019 error code on hyundai 55

The u0019 code is a communication failure code on the low speed bus line. You will want to have all modules scanned to see which one is not setting the same code. The module on the low speed bus that is not setting the code is the problem most likly. This particular code is indicating there is an open/short to ground or B+ on the bus line. You will have to find a good electrical shop to diagnose the problem.
Good luck.

Posted on Nov 29, 2011

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2 Answers

My 99 intrepid dashboard all lights on I changed speed sensor cam sensor trans input n output dashboard lights still on and no bus in speed odometer


Do you know what serial data bus communications are ? This is something you need to take to a qualified repair shop . You just spent money needlessly . You do not have the scanner or knowledge to fix these type problems . http://www.cnblogs.com/shangdawei/p/3570499.html
CCD (Chrysler Collision Detection) Data Bus.

May 15, 2016 | 1999 Dodge Intrepid

1 Answer

On my 05 Ford mustang v6, my fan only comes on when i turn my AC on and makes a funny noise when I turn the AC on, diagnostic test gave me a code, u1900, what does this mean and how do I fix it?


Where did you pull this code from ? What type scan tool did you use ,or was it a code reader ? Do you know about data communication networks on modern cars ? A U codes indicate a communication problem on the data network .
U1900 CAN Communication Bus Fault-Receive Error Audio Control Module REFER to Section 418-00 . U1900 CAN Communication Bus Fault-Receive Error ABS Module REFER to Section 418-00 . U1900 CAN Communication Bus Fault-Receive Error Instrument Cluster REFER to Section 418-00 . U1900 CAN Communication Bus Fault-Receive Error SJB REFER to Section 418-00 . The thing that would make this easier to diagnose would be to have a factory scan tool or a professional grade . Need to know what modules can communicate with scan tool .Honestly ,Don't think you can fix this . Dealer or ASE certified repair shop .Do you know what C.A.N. - controller area network is ? The vehicle has 3 module communications networks:
  • high speed controller area network (CAN)
  • medium speed CAN
  • international standards organization (ISO) 9141 communications network
The diagnostic tool connects to the communications networks through the data link connector (DLC). The DLC allows a diagnostic tool access to diagnose and test the vehicle systems of any module on the communications networks.
All 3 communications networks are connected to the DLC. This makes diagnosis and testing of these systems easier by allowing one diagnostic tool to be able to diagnose and control any module on the 3 communications networks from one common connector. The DLC can be found under the instrument panel between the steering column and the driver door. Which module doesn't communicate with scan tool ?
Symptom Chart Condition Possible Sources Action
  • The anti-lock brake system (ABS) module does not respond to the diagnostic tool
  • Circuit or connection in the high speed controller area network (CAN)
  • ABS module
  • Go To Pinpoint Test A .
  • The audio unit does not respond to the diagnostic tool
  • Circuit or connection in the medium speed controller area network (CAN)
  • Audio unit
  • Go To Pinpoint Test B .
  • Circuit or connection in the medium speed controller area network (CAN)
  • Audio unit
  • Go To Pinpoint Test B .
  • The instrument cluster does not respond to the diagnostic tool - high speed controller area network (CAN)
  • Circuit or connection in the high speed CAN
  • Instrument cluster
  • Go To Pinpoint Test C .
  • The instrument cluster does not respond to the diagnostic tool - medium speed controller area network (CAN)
  • Circuit or connection in the medium speed CAN
  • Instrument cluster
  • Go To Pinpoint Test D .
  • The powertrain control module (PCM) does not respond to the diagnostic tool
  • Circuit or connection in the high speed controller area network (CAN)
  • PCM
  • Go To Pinpoint Test E .
  • The restraint control module (RCM) does not respond to the diagnostic tool
  • Circuit or connection in the international standards organization (ISO) 9141 communications network
  • RCM
  • Go To Pinpoint Test I .
  • The smart junction box (SJB) does not respond to the diagnostic tool
  • Circuit or connection in the medium speed controller area network (CAN)
  • SJB
  • Go To Pinpoint Test F .
  • No high speed controller area network (CAN) communication
  • Circuit or connection in the high speed CAN
  • High speed CAN modules
  • Go To Pinpoint Test G .
  • No medium speed controller area network (CAN) communication
  • Circuit or connection in the medium speed CAN
  • Medium speed CAN modules
  • Go To Pinpoint Test H .
  • No international standards organization (ISO) 9141 communications network communication
  • Circuit or connection in the ISO 9141 communications network circuit
  • Restraint control module (RCM)
  • Go To Pinpoint Test I .
  • No module/network communication - no power to the diagnostic tool
  • Data link connector (DLC) C251
  • Bussed electrical center (BEC) fuse 4 (30A)
  • Smart junction box (SJB) fuse 8 (10A)
  • Circuitry
  • Diagnostic tool
  • Go To Pinpoint Test J .

Apr 11, 2016 | Ford Cars & Trucks

1 Answer

Y would there be no communication to trans


A bad CAN data circuit , no power or ground to the module ! Do you have any DTC'S
DTC U0001 High Speed CAN Communication Bus
Modules connected to the high speed GMLAN serial data circuits monitor for serial data communications on the high speed GMLAN network during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module detects a bus-off condition, a DTC U2100 will be set. This DTC can be retrieved as history only.

Jan 31, 2016 | 2005 Chevrolet Chevrolet TrailBlazer EXT...

1 Answer

What and where is the can c bus on a 2007 dodge ram 1500 5.7. Code u0001?


Can bus C is a serial data communication network that certain modules talk ,share information on ! There can be two or even three different bus networks - A , B , C . One being faster in speed of data transfer then the other ! There are two wire data bus's an single wire ones ! CAN- Controller Area Network is a two wire bus an the wires are twisted together to shield from noise interference . You code U0001 is a communication problem on the bus , a module isn't communicating ! How to Diagnose Controller Area Network CAN This is something best left to a trained technician !

Sep 02, 2015 | Dodge Cars & Trucks

1 Answer

Error Code U0019 on a HYUNDAI SANTA FE MODEL YEAR 2004 ENGINE : DIESEL


Code meanning low speed can communication bus not sure what that is

Apr 09, 2015 | 2004 Hyundai Santa Fe

1 Answer

I have 08 ford escape when I try to scan it said no communication


Do you know about communication networks or serial data communications on vehicles , these let the scan tool communicate with the different modules on the vehicle ! Newer vehicles have several, PCM - powertrain control module , Anti-theft module , Air bags , antilock brakes , Body control module or in the case of ford a smart junction box . an some others !
Communications Network Vehicle communication utilizes both International Standards Organization (ISO) 9141 and controller area network (CAN) communications. ISO 9141 is used for diagnostic use only, and CAN is used for many modules to communicate with each other on a common network. CAN in-vehicle networking, is a method for transferring data among distributed electronic modules via a serial data bus. Without serial networking, intermodule communication requires dedicated, point to point wiring resulting in bulky, expensive, complex, and difficult to install wiring harnesses. Applying a serial data network reduces the number of wires combining the signals on a single network. Information is sent to the individual control modules that control each function.
The vehicle has 3 module communication networks:
  • ISO 9141
  • Medium speed (MS) CAN
  • High speed (HS) CAN
All 3 networks are connected to the data link connector (DLC). This makes diagnosis and testing of these systems easier by allowing one scan tool to be able to diagnose and control any module on the 3 networks from one connector. The DLC can be found under the instrument panel between the steering column and the audio unit.
HS-CAN Network Operation
The HS-CAN network communicates using bussed messages. The HS-CAN network uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. In addition to scan tool communication, this network allows sharing of information between all modules on the network.
The HS-CAN is a high speed communication network used for the following modules:
  • ABS module
  • 4WD control module (if equipped)
  • Instrument cluster
  • PCM
  • MS-CAN Network Operation
    The MS-CAN network communicates using bussed messages. The MS-CAN has an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. In addition to scan tool communication, this network allows sharing of information between all modules on the network.
    The MS-CAN is a medium speed communication network used for the following modules:
    • Instrument cluster
    • SJB
    HS-CAN Network
  • What type of scan tool are you using ? or are you using a code reader ?

  • What
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Mar 18, 2015 | 2008 Ford Escape

1 Answer

What parts for low speed communication bus


combine with other mix measurement

Jan 04, 2014 | Cars & Trucks

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2002 SANTA FE Diesel car won't start code U0002 AND U0009 WHAT IS THIS FAULT


what is the probable cause of error code U0019 hyundai starex 2002

Aug 17, 2012 | 2002 Hyundai Santa Fe

1 Answer

U0019 error code on hyundai 55


The u0019 code is a communication failure code on the low speed bus line. You will want to have all modules scanned to see which one is not setting the same code. The module on the low speed bus that is not setting the code is the problem most likly. This particular code is indicating there is an open/short to ground or B+ on the bus line. You will have to find a good electrical shop to diagnose the problem.
Good luck.

Nov 28, 2011 | 2005 Hyundai Tucson

1 Answer

Code u0008 high speed can communication bus (-) high


U codes are reserved for future systems and may be proprietary to the manufacturer.

The CAN Bus allows 12 Volts, or other potential, power to be distributed around the vehicle (or system) on a single power rail with local actuators connecting the power to each application as needed. Vehicle functions such as temperatures , alarms or the positions of switches are monitored by sensors connected to the bus and the controller can direct the actuators to initiate the appropriate response as required.

Two variants are available to suit different transmission rates. A high speed (1 MBaud) bus is used for rapid control devices for operations such as engine management and vehicle stability and motion control. For simple switching and control of functions such as lighting, windows, mirror adjustment and instrument displays a low speed (100 KBaud) bus is used.

The CAN bus was designed to provide secure communications in the very harsh operating environments with high levels of electrical noise which are found in automotive systems.

The communications protocol defines the following:

  • Method of addressing the devices connected to the bus
  • Data word format (The message)
  • Priority setting
  • Transmission sequence
  • Control signals
  • Error detection
  • Error handling or correction
  • Transmission speed

The message data, the control signals and the error correction are contained in a data frames of equal length which are transmitted sequentially over the transmission channel.

Definitively, you need visit the dealer to know excalty is you have any problem with the software in your modules os any loss harnesses or wires there.

Additional details, onyl with the manufactured.

Hope this helps.

Jan 30, 2011 | 2002 Hyundai Accent

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