Motor Vehicle Maintenance and Repair Stack Exchange
Motor Vehicle Maintenance and Repair Stack Exchange

Questions tagged [can-bus]

CAN (Controller Area Network) bus (internal vehicle communications network) is a message-based protocol, designed originally for automotive applications, but can now be found in aerospace and maritime as well. This is a standard which allows different parts within a vehicle to communicate with each other without the use of a host computer.

CAN (Controller Area Network) bus (internal vehicle communications network) is a connector to a message-based protocol network, designed originally for automotive applications, but can now be found in aerospace and maritime as well. This is a standard which allows different parts within a vehicle to communicate with each other without the use of a host computer.

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Why are there multiple CAN buses in vehicles?

There are a number of questions on the CAN bus but none (so far as I can tell) that explain why there are several CAN buses in a vehicle. From what I understand many different nodes can be connected to a single CAN bus, so I am not sure why you…
Moeman69
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What is the best way to reverse engineer the signals of a CAN-BUS?

There are always better ways.... I'm up to reverse engineer some CAN-BUS signals. Before I start, I'd like to discuss with guys who done this before and are willing to share their methodology. I'm interested in Hardware and Software used to achieve…
otmezger
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In vehicle network

There are multiple in-vehicle network types: CAN, MOST, LIN... Do vehicles typically use only one of these or do they use a combination of networks types?
Akhilesh Gupta
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What happens if I shortcut the CANBUS?

It's a really simple question, but I found nothing about it on the internet. I was thinking on buying a CANBUS shield for my Arduino so that I can try to do some things on my car, but I am a bit afraid of a scenario where I shortcut (by mistake) the…
Fusseldieb
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How to simulate a vehicle CAN bus network?

I wish to do a project about CAN bus message testing, but without a real vehicle. Is there any way to simulate a virtual CAN bus network?
TJCLK
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CRC field calculation for CAN 2.0 B

Do you have a practical example on how to calculate the CRC field for CAN 2.0 B?
user11642
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Connecting to car CANbus

I have a CANLogger 2000 and the correct supplier supplied ODB-II CANBus to 9 pin D-type cable. (http://www.csselectronics.com/screen/product/can-bus-logger-canlogger2000/language/en) The CANLogger has 8GB internal memory, I have connected the device…
SPlatten
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Should the car factory be responsible for their CAN dbc?

Which side should be responsible for a correct CAN dbc ? Developer or car factory ? Here is the problem I met: The car factory provided both CAN matrix and CAN dbc, unfortunately the CAN dbc , when imported into davinci tool, reads many issues, the…
CarrieTulip
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CAN Bus Off DTCs and Parasitic Draw

Working on my 2010 Fiat Ducato 250 series. I have a parasitic draw of around 200ma. There are two codes which won't go away, U1602 CAN Line, Bus Off Intermittent in the Marelli Instrument Cluster, and D602 CAN Line Error, Bus Off in the Body…
Robert S. Barnes
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Understanding the CAN Bus

I am looking to write an application that works with the J1939 protocol which is part of CAN (Controller Area Network) for vehicle engines. I am reading on this but I am getting some conflicting information in regards to the requirements of…
latul
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How to establish if a car has CAN Bus?

Can someone please help me on ways to establish if a car has a CAN Bus? I am specifically looking for? Physical or Technical/Electrical examination to check if its a CAN Bus I have read about ISO 15765-4.3:2001 standards, but I am looking for a…
Youbaraj Sharma
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Can an "e-shock e-lean" transducer be fitted to a non-CAN-Bus equipped motor-cycle?

I would like to add an "e-shock" "e-lean" (https://www.e-shock.it/products-item/e-lean-advanced/) inclinometer to a motorcycle which may not be equipped with CAN-BUS ECU. For a display and datalogger I was hoping to use one of the MOTEC…
AK7466
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using OBDII with can-utils Ubuntu

i'm trying to figure out a way to communicate with my OBDII using can-util lib but i'm facing lots of issues my question is "is what i'm trying to do possible" if so why when i connect my OBDII the can0 interface doesn't show
user46860
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Getting secondry can bus data via PRIMARY can bus

I want to get the data of the middle or lower can bus that is connected to BCM (body control management) via the high baud can bus -that is connected to the Obd port. Does someone has did it? What kind of request I need to ask?
user45530
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Extending CAN network with additional sensors

simple question with a probably complex answer, can I extend a cars CAN network and wire in additional sensors to it? If yes can I get pressure and temperature senders for a CAN network (oil, water etc) I am thinking about using a Raspberry PI and…
Rob
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