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    4. : What does code 21 mean on the Opel Astra?

What does code 21 mean on the Opel Astra?
Years 2009-2016

Answer

When the error code 21 comes on on an Opel car, it means that the left position light bulb is not working and therefore it must be replaced, see use and maintenance manual.
Posted on: 11 November 2022 by ScegliAuto

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