[forkade]

golf 6 tdi 2009
the car starts and drives ok

the problem is
just after starting the instrument cluster off
default is
[b]U1401 functional limitation due to overvoltage - sporadic[/b]
you can help

golf.txt
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[mkii]

bad analyse voltage by micronas !!!

look at the voltage parameter in cluster with the engine stopped, it must be more than 2 or 3 volts in your case

[spacewalker]

bad analyse voltage by micronas !!!

look at the voltage parameter in cluster with the engine stopped, it must be more than 2 or 3 volts in your case

Micronas ?
this is UDS cluster 
swap cluster to latest NEC, even w/o immo match to check dtc

[forkade]

I would like to know which component should be changed in the cluster

[mkii]

Micronas ?
this is UDS cluster 
swap cluster to latest NEC, even w/o immo match to check dtc

sorry I was wrong about the type of cluster because I had the case on an A3 8P micronas cluster

but the problem is the same