OBD-II Communications Anomaly List(STABILIZED Dec 2021)
J1699/4_202112
To define a list of anomalies related to OBD Communications. Misinterpretations of various OBD Communications Standards and Recommended Practices have resulted in OBD “no-communications” situations in the field. This Information Report identifies the most prevalent of these.
Rationale:
The technical report covers technology, products, or processes which are mature and not likely to change in the foreseeable future. Therefore, no further changes are expected due to the SAE J1979 updated protocol requirements.
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Related Topics:
On-board diagnostics (OBD)
Communication protocols
Engine control systems
Standardization
Electromagnetic compatibility
Electronic control systems
Architecture
Identification numbers
Electronic control units
Also known as: SAE J 1699/4
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