No codes were returned through the completed generic channels at that time.
CASE 04Buyer evidenceFoundation7 minutes
Clean screen, incomplete monitors
2019 gasoline coupe offered for sale · Seller says it has no codes
Simulated evidenceNo vehicle commandsEvery decision explained
THE FAILURE SCENE
The generic scan returns no stored, pending, or permanent emissions codes. Several supported monitors are incomplete.
Supported self-tests have not completed since reset or memory loss.
The short interval can explain incomplete monitors but not why memory was reset.
Body, chassis, restraint, and other enhanced modules were not inspected.
DECISION 1 / 3
What is the accurate buyer conclusion?
The seller offers to clear the screen again.
AUTHORSHIP · SOURCES · CORRECTIONS
See how this page earns trust.
These links are primary-source starting points for the page's scope. They do not replace the current manufacturer procedure, wiring, specification, or service information for a specific vehicle.
Publisher
ScanWrench Editorial is the working byline for this library. Joshua Black, founder and publisher, is responsible for publication decisions, disclosures, and corrections.
A reviewed date means an editorial scope and safety check. It is not an ASE credential, OEM authorization, or vehicle-specific repair approval.
Primary sources
- SAE J2012 — Diagnostic Trouble Code DefinitionsSAE International · Standardized DTC structure, definitions, and manufacturer-controlled ranges.
- SAE on-board diagnostics standards indexSAE International · Primary standards family for regulated OBD services, identifiers, and transport context.
- NHTSA datasets and APIsNational Highway Traffic Safety Administration · Primary U.S. recall, complaint, investigation, rating, and manufacturer-communication data.
Revision history
- Simulation review: claim boundaries, safety language, internal links, and cited source scope checked.
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