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Frequently asked questions about cars and motorcycles
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What does code 21 mean on Opels?
Years

Answer

In Opel-branded cars, error code 21 indicates that the left sidelight bulb has burned out. By replacing it we will see the error code disappear automatically. If this, however, persists, there may be a false contact.
Posted on: 2 February 2023 by ScegliAuto

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