P0668 Code on Leon FR 170

[Be4st]

I have a traction control light on that is on permanently (no other lights) and this is one of the codes that came up. Pretty sure that that would mean it would fail it's MOT and need it sorted before I take it.

Any idea what the cause is as what I'm reading seems a bit vague and confusing. Ross-Tech says the symptoms should be either a cold engine or engine fan running at full speed which isn't the case at all. TIA

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[R3k1355]

What have you scanned that with?

 

[Be4st]

What have you scanned that with?

vGate iCar Pro and the CarScanner app. It's the only thing that seems to read all the modules. Bought a laptop and a 409.1 VagCom cable, but that can only see the engine and no other modules like the app can

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