{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9670817","patent":{"patent_number":"US-9670817","title":"Systems and methods for running a NOx self-diagnostic test","assignee":null,"inventors":[],"filing_date":"2015-06-15T00:00:00.000Z","publication_date":"2017-06-06T00:00:00.000Z","cpc_codes":["G01N","G01N"],"num_claims":20,"abstract":"Methods and systems are provided for detecting NOx sensor degradation based on results from a NOx sensor self-diagnostic (SD) test. In one example, a method may comprise: determining that a nitrogen oxide (NOx) sensor is degraded if outputs received from the sensor via a CAN bus during a self-diagnostic test are outside a threshold range. Additionally, only outputs received from the sensor during a self-diagnostic (SD) test performed after a first completed SD test after a key-off event, where the outputs are generated under conditions where a temperature at the sensor is less than a threshold, and an oxygen concentration is within a threshold range may be used to determine if the sensor is degraded."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Systems and methods for running a NOx self-diagnostic test","description":"Methods and systems are provided for detecting NOx sensor degradation based on results from a NOx sensor self-diagnostic (SD) test. In one example, a method may comprise: determining that a nitrogen o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9670817","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9670817","citation_suggestion":"Patentable. \"Systems and methods for running a NOx self-diagnostic test\" (US-9670817). https://patentable.app/patents/US-9670817","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9670817","json":"https://patentable.app/api/llm-context/US-9670817","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:10:16.613Z"}