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    4. : How to reset code 21 on the Opel Astra J?

How to reset code 21 on the Opel Astra J?
How to reset code 21 on the Opel Astra J?

Years: 2009-2016
Code 21 cannot be manually reset but disappears by itself once the problem that generated it has been resolved. As it indicates a malfunction of the left front position light, it is usually sufficient to replace the bulb.

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What Does Error Code 82 Mean on the Opel Astra?
What Does Error Code 82 Mean on the Opel Astra?
Vauxhall Astra (2009-2016 / Astra J)
Error code 82 indicates that the oil change interval level has been reached. This error code activates on all Opel vehicles. Today, we will specifica…
What Does Error Code 35 Indicate on the Opel Astra?
What Does Error Code 35 Indicate on the Opel Astra?
Vauxhall Astra (2015-2022 / Astra K) The "error code 35" on Opel vehicles, particularly the Opel Astra, Meriva, and Insignia, corresponds to the airbag maintenance and control system. Wh…
What Does Error Code 18 Indicate on an Opel Astra?
What Does Error Code 18 Indicate on an Opel Astra?
Vauxhall Astra (2015-2022 / Astra K) Error code 18 on an Opel Astra K model indicates a malfunction of the left front headlamp bulb. This means you need to replace the bulb to reset the …

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