SelfSync

OBD-II data message

OBD-II data messages store the raw readings of the on-board diagnostics port of a vehicle (engine speed, vehicle speed, fuel level…), as parameter IDs (PIDs).

FIT name
obdii_data
Global message number
174
JavaScript SDK key
obdiiDataMesgs
Fields
10

Fields

  • timestampDateTimes

    Moment the message refers to, in UTC. FIT stores it as seconds since the FIT epoch (December 31, 1989, 00:00:00 UTC); decoders usually expose it as a regular date.

  • timestampMsUint16ms

    Millisecond part of the timestamp, for sub-second precision.

  • timeOffsetUint16[]ms

    Offset of each reading from the start timestamp.

  • pidByte

    Parameter ID (PID) of the readings.

  • rawDataByte[]

    Raw data of the readings.

  • pidDataSizeUint8[]

    Size of each reading. When missing, refer to SAE J1979.

  • systemTimeUint32[]

    Device system time, in milliseconds, associated with each sample of the message.

  • startTimestampDateTime

    Moment the described period or event started.

  • startTimestampMsUint16ms

    Millisecond part of startTimestamp.

  • mesgNumString

    Global message number identifying the kind of message. Decoders use it to know which profile to apply to the data.

Other sensors and raw data messages

See all the FIT messages