Asked by: Colby Chine
business and finance non profit organizations

What is the difference between OBD and UDS?

Last Updated: 16th June, 2021

Generally, UDS and OBD are both diagnosticprotocol, but they are actually not comparable. While UDSprotocol is used to diagnose a fault in an off-boardcondition, i.e. when the car is at the service center, OBDis essentially an onboard diagnostic service.

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Also to know is, how does UDS protocol work?

Unified Diagnostic Service (UDS) is anautomotive protocol that lets the diagnostic systemscommunicate with the ECUs to diagnose faults and reprogram the ECUsaccordingly (if required). The diagnostic tester tool has a GUIthat connects to the ECU, retrieves the fault code and displaysit.

Furthermore, what is DTC in can? DTC, as you can already surmise from thetitle, is an acronym for “Diagnostic Trouble Codes”.When your engine control system detects a problem, the computerstores the diagnostic trouble code in its memory.

Beside above, what is UDS in automotive?

(Er.SKY)Unified Diagnostic Services (UDS) is adiagnostic communication protocol in the electronic control unit(ECU) environment within the automotive electronics, whichis specified in the ISO 14229-1. The diagnostic tool contacts allcontrol units installed in a vehicle, which have UDSservices enabled.

What is read data by identifier?

The “Read Data By Identifier” serviceallows the diagnostic tool to request data record valuesfrom the ECU identified by Record Dataidentifiers.

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