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:

U03CB: ISO/SAE Reserved

By OBD Codex / February 12, 2024

The U03CB 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.

U03CC: ISO/SAE Reserved

By OBD Codex / February 12, 2024

The U03CC 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.

U03CD: ISO/SAE Reserved

By OBD Codex / February 15, 2024

The U03CD 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.

U03CE: ISO/SAE Reserved

By OBD Codex / February 08, 2024

The U03CE 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.

U03CF: ISO/SAE Reserved

By OBD Codex / February 08, 2024

The U03CF 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.

U03D0: ISO/SAE Reserved

By OBD Codex / February 08, 2024

The U03D0 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.

U03D1: ISO/SAE Reserved

By OBD Codex / January 14, 2024

The U03D1 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.

U03D2: ISO/SAE Reserved

By OBD Codex / February 08, 2024

The U03D2 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.

U03D3: ISO/SAE Reserved

By OBD Codex / February 10, 2024

The U03D3 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.

U03D4: ISO/SAE Reserved

By OBD Codex / January 29, 2024

The U03D4 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.