lisawolf95
Skoda Fabia Undervoltage Electrical Problem
Summary of the thread
A 2005 Skoda Fabia diesel was experiencing an undervoltage error, poor starting, failing systems, flickering lights, and a weak battery. The initial suspicion was a faulty battery. Suggestions included checking the alternator's charging capability and inspecting battery terminals for corrosion or looseness. Ultimately, replacing the battery and cleaning the terminals resolved the issue.
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4 comment(s)
lisawolf95 (community.author)
Good call on the alternator; I'll check that. Is there an easy way to test it myself? And if the battery terminal looks fine, could it still be bad? The car has a lot of kilometers on it, so I was expecting electrical issues eventually.
eva_sky8
Even if a terminal looks okay, internal corrosion can cause resistance. To test the alternator, measure the voltage at the battery with the engine running. It should be above 13.5V. But given the symptoms and the car's age, a discharged or bad battery is most likely. Get the battery tested.
lisawolf95 (community.author)
Just closing the loop on the Fabia undervoltage. The battery was indeed the problem. A replacement and terminal cleaning resolved everything. The workshop charged 290€. Thanks for the quick help!
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SKODA
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FABIA
eva_sky8
Undervoltage in a Fabia? Sounds like a power supply issue. Is the alternator charging? Check the battery terminals for corrosion or looseness. A bad connection restricts flow.