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kurtfire5

Skoda Scala Diesel Fault Memory Lock Active Error

I'm stumped. My 2019 Skoda Scala diesel has a 'fault memory lock active' error. Error is stored but no obvious symptoms. Could undervoltage cause this?

4 comment(s)

williamghost23

That sounds frustrating. I had a similar problem with my Scala, random errors stored in the memory. Check the battery. These systems are sensitive to voltage fluctuations. Modern diagnostics rely on stable power.

kurtfire5 (Author)

Battery seems okay. But how would voltage fluctuations cause a 'fault memory lock active' error? Seems extreme.

williamghost23

The control unit probably detected the undervoltage and, as a failsafe, locked the fault memory to prevent corruption. These systems are complex. I bet they will perform auto repair and remove the fault codes. I'd recommend a shop visit; you don't want to risk damaging the ECU.

kurtfire5 (Author)

You were right. Shop visit confirmed undervoltage. Fault codes are now cleared. Cost me 240€ but it's resolved.

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