How to use engine code reader

Ancel code reader: https://bit.ly/recommended-codereader
Code readers comparison: https://www.iamcarhacker.com/best-engine-code-readers

OBD2 Starter Guide: https://bit.ly/OBD-guide

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Ancel AD530: https://amzn.to/3rOwJiU
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More about OBD2 at https://iamcarhacker.com