Filter
Top Products
Chapter 6 Automotive Diagnostic Command Set API for C
© National Instruments Corporation 6-57 Automotive Diagnostic Command Set User Manual
len
On input, len must contain the DTCs array length in elements. On return, it contains the
number of valid elements in the
DTCs array.
success
Indicates successful receipt of a positive response message for this diagnostic service.
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
ndStatusToString function to obtain a descriptive string for the return value.
Description
This function reads diagnostic trouble codes from the ECU memory. If you specify
groupOfDTC, the ECU reports DTCs based only on the functional group selected by
groupOfDTC.
For further details about this service, refer to the ISO 14230-3 standard.