Return value, Description – National Instruments CAN 372139B-01 User Manual
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Chapter 6
Automotive Diagnostic Command Set API for C
Automotive Diagnostic Command Set User Manual
6-102
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Return Value
The return value indicates the function call status as a signed 32-bit integer. Zero means the
function executed successfully. A negative value specifies an error, which means the function
did not perform the expected behavior. A positive value specifies a warning, which means the
function performed as expected, but a condition arose that may require attention.
Use the
function to obtain a descriptive string for the return value.
Description
This function executes the ReportSupportedDTCs subfunction of the UDS
ReadDiagnosticTroubleCodeInformation service and reads all supported DTCs from the
ECU memory.
For further details about this service, refer to the ISO 15765-3 standard.