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:

B0390: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0390 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.

B0391: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0391 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.

B0392: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0392 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.

B0393: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0393 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.

B0394: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0394 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.

B0395: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0395 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.

B0396: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0396 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.

B0397: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0397 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.

B0398: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0398 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.

B0399: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The B0399 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.