Generic Codes

Generic OBD2 codes are standardized codes that apply to all cars that are OBD2 compliant, regardless of the make or model. 

Our collection of articles on this page provides a wealth of information about these codes, going beyond just an explanation of what they mean. We analyze each code in detail, providing technical explanations, common causes, symptoms to look out for, and recommended solutions for each issue.

So why wait? Start exploring now!

In a hurry? Quickly jump to the code you're facing:

U038F: ISO/SAE Reserved

By OBD Codex / February 12, 2024

The U038F code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.

U0390: ISO/SAE Reserved

By OBD Codex / February 12, 2024

The U0390 code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.

U0391: ISO/SAE Reserved

By OBD Codex / February 12, 2024

The U0391 code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.

U0392: ISO/SAE Reserved

By OBD Codex / February 09, 2024

The U0392 code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.

U0393: ISO/SAE Reserved

By OBD Codex / February 09, 2024

The U0393 code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.

U0394: ISO/SAE Reserved

By OBD Codex / January 27, 2024

The U0394 code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.

U0395: ISO/SAE Reserved

By OBD Codex / January 24, 2024

The U0395 code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.

U0396: ISO/SAE Reserved

By OBD Codex / February 08, 2024

The U0396 code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.

U0397: ISO/SAE Reserved

By OBD Codex / February 07, 2024

The U0397 code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.

U0398: ISO/SAE Reserved

By OBD Codex / February 05, 2024

The U0398 code is a generic ISO/SAE Reserved code that may appear in your vehicle's diagnostic system. Read on to learn more about it and what you should do to deal with it.