General Vehicle Network Discussion

Open discussion about CAN, J1939, OBD-II, CANopen, LIN, embedded platforms, diagnostics, and real-world network challenges.

23 Topics 0 Followers

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Access and operation of Read Data Stream in automotive diagnostic systems
5/11/26, 9:53 PM • Alex.c 5/11/26, 9:53 PM

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Alex.c
5/11/26, 9:53 PM

Read Data Stream is a fundamental function in automotive diagnostics because it allows real-time ...
PACCAR TURBO INSTRUMENT Having trouble with your Paccar truck's power?
5/7/26, 8:49 AM • diegocv097 5/7/26, 8:49 AM

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diegocv097
5/7/26, 8:49 AM

Yesterday we inspected a Paccar truck with a serious problem. Several internal components had alr...
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Reading Fault Codes Using OBD2 Mode 03 Service
5/6/26, 10:34 PM • Alex.c 5/6/26, 10:34 PM

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Alex.c
5/6/26, 10:34 PM

During the analysis of communication between an automotive scanner and an ECU, the operation of t...
OBD2 MAF FAULT Learn how to generate a fault code for your vehicle and read it on the scanner with real-time data
5/5/26, 10:04 AM • diegocv097 5/5/26, 10:04 AM

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diegocv097
5/5/26, 10:04 AM

With the CanBus Multiplex Trainer, you can read the hexadecimal data used by your modules to comm...
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Security Access (Service 0x27) in UDS and its role in automotive diagnostics
5/4/26, 9:38 PM • Alex.c 5/4/26, 9:38 PM

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Alex.c
5/4/26, 9:38 PM

Security Access (0x27) is a fundamental mechanism within the UDS protocol that controls access to...
J1939 Converter Cluster J1939 Real Cluster Control in truck with the Inpronic Dashboard
4/30/26, 8:39 AM • diegocv097 4/30/26, 8:39 AM

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diegocv097
4/30/26, 8:39 AM

If we want to check the communication speed and the data displayed by the gauges on a real truck'...
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Interpretation and Response of CAN Frames for Reading Diagnostic Trouble Codes (DTC) and Associated Data in Toyota/Scion
4/29/26, 10:59 PM • Alex.c 4/29/26, 10:59 PM

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Alex.c
4/29/26, 10:59 PM

In automotive diagnostics over the CAN network, especially in Toyota/Scion vehicles such as the F...
OBD2 HP-TUNER DTC-OFF DTC OFF hide inside the OBD2
4/28/26, 8:24 AM • diegocv097 4/28/26, 8:24 AM

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diegocv097
4/28/26, 8:24 AM

When a DTC OFF is performed on a light vehicle using any tool or tuner via OBD2, bench, or Open, ...
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Analysis of the Diagnostic Index in BMW modules using UDS and its interpretation
4/28/26, 8:13 AM • Alex.c 4/28/26, 8:13 AM

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Alex.c
4/28/26, 8:13 AM

In advanced diagnostics of vehicles such as the BMW X5 E70, one of the most important aspects is ...
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Analysis of the Diagnostic Index in BMW modules using UDS and its interpretation
4/27/26, 10:24 PM • Alex.c 4/27/26, 10:24 PM

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Alex.c
4/27/26, 10:24 PM

In advanced diagnostics of vehicles such as the BMW X5 E70, one of the most important aspects is ...
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Interpretation of Multiframe Responses in Automotive Diagnostics via CAN Bus (Read DTC)
4/22/26, 9:35 PM • Alex.c 4/22/26, 9:35 PM

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Alex.c
4/22/26, 9:35 PM

In vehicle diagnostics using the UDS protocol, when requesting fault codes through ...
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UDS pre-diagnostic unlocking mechanisms in MINI/BMW vehicles using proprietary CAN frames
4/21/26, 8:09 AM • Alex.c 4/21/26, 8:09 AM

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Alex.c
4/21/26, 8:09 AM

In vehicles such as the 2012 MINI Cooper, it has been observed that access to diagnostics is not ...
J1939 J1939-PGN-Decoding PGN J1939 Simulator and Fault Injector
4/16/26, 8:21 AM • diegocv097 4/16/26, 8:21 AM

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diegocv097
4/16/26, 8:21 AM

If you need to find a way to train yourself in the communication language your truck's modules us...
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Analysis and Interpretation of UDS (0x31) Frames in the LIN Module of Mitsubishi for DTC Reading via ISO-TP
4/15/26, 9:07 PM • Alex.c 4/15/26, 9:07 PM

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Alex.c
4/15/26, 9:07 PM

I am currently performing reverse engineering on a Mitsubishi vehicle, and while analyzing the mo...
CAN-Bus-Diagnostics Maserati Steering Wheel Problems In CanBus Network with the Maserati´s Steering Wheel
4/9/26, 8:23 AM • diegocv097 4/9/26, 8:23 AM

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diegocv097
4/9/26, 8:23 AM

A mechanic who owns a workshop brought in a Maserati with steering wheel problems. The symptoms a...
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UDS Protocol and CAN Frame Interpretation in Automotive Diagnostics
4/8/26, 7:45 PM • Alex.c 4/8/26, 7:45 PM

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Alex.c
4/8/26, 7:45 PM

The UDS (Unified Diagnostic Services) protocol is a diagnostic standard used in modern vehicles t...
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Differences between CAN Broadcast and Request communication in automotive systems
4/7/26, 8:06 AM • Alex.c 4/7/26, 8:06 AM

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Alex.c
4/7/26, 8:06 AM

CAN (Controller Area Network) communication mainly operates in two modes: Broadcast and Request/R...
CAN-Bus LIN-Bus LIN LinBus Master and Slave to BCM
4/2/26, 2:38 PM • diegocv097 4/2/26, 2:38 PM

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diegocv097
4/2/26, 2:38 PM

The CAN bus communication network, using the OBD2 protocol, is standard in most vehicles from 200...
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Interpretation of CAN frames in Audi vehicles with 29-bit identifiers (extended CAN) vs standard 11-bit CAN
4/1/26, 6:27 PM • Alex.c 4/1/26, 6:27 PM

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Alex.c
4/1/26, 6:27 PM

I’m working with CAN communication in an Audi vehicle and I have a question regarding the u...
CAN-Bus CAN-Bus-Diagnostics MAF Emergency Mode MAF Sensor
3/31/26, 10:01 AM • diegocv097 3/31/26, 10:01 AM

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diegocv097
3/31/26, 10:01 AM

Did you know that when the MAF sensor fails in your vehicle, the ECM has an internally programmed...

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