P1955 Mercedes Sprinter code

Good to all,

someone would know how to tell me the error code P1955 What failure is it?

I was looking for the codes but this in particular I do not see it anywhere.

Thanks and greetings

P1955: spark plug control module (J703) to the PCM communication circuit, scope / performance
This basically means that there is a wiring problem
should check the wiring connectors in the control units (motor and units of incandescent spark plugs) these must be in the engine compartment just behind the lighthouse
checks these connectors and others for any lazy water input, non -isolated cables
. Clean and tight battery cable contacts and engine ground cable.

It is not my autoria, I hope it serves you.
A hug