How to add a human-readable description of DTC code into the message?

Using plugin to enrich message with human-readable description of automobile industry standardized DTC codes.

The "msg-dtc-decoder" plugin-type allows you to decode source DTC codes like “P0068” into a human-readable form, for example “MAP/MAF - Throttle Position Correlation”. 

The plugin automatically analyzes tracker messages for trouble codes and, if there is such a code in the plugin's database, adds a description to it.  If the device sends error codes they will be parsed as an array:

can.dtc: ["P0068", "P0507"]

description of the parameters will be added as a separate parameter for each element.

can.dtc.P0068.description: "MAP/MAF - Throttle Position Correlation"
can.dtc.P0507.description: "Idle Air Control System RPM Higher Than Expected"

If the description is not found, the parameter value will be Unknown, for example:

can.dtc.P0507.description: "Unknown"

How to use

Click on the "+" button in the Telematics Hub -> Plugins section to create a new plugin:

flespi panel telematics hub plugins


Pick “msg-dtc-decoder” in the configuration drop-down. 

When you assign device to this plugin, you'll see new parameters in device messages:

If you analyze intervals data (e.g. vehicle trips) with calculators you can use a counter of type="parameter", method="distinct" with parameter="can.dtc" to add to the interval an array with all distinct DTC codes that were reported by the vehicle during that interval (trip).

Change log

Subscribe to the DTC decoder plugin change log to stay in sync with any updates.

More plugin types

Find a comprehensive list of available plugins types here.


See also
Using plugins to resolve the coordinates of GSM base stations and Wi-Fi networks into position coordinates using Unwired Labs API.