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:
U02FB: ISO/SAE Reserved
The U02FB 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.
U02FC: ISO/SAE Reserved
The U02FC 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.
U02FD: ISO/SAE Reserved
The U02FD 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.
U02FE: ISO/SAE Reserved
The U02FE 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.
U02FF: ISO/SAE Reserved
The U02FF 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.
U0300: Internal Control Module Software Incompatibility
Is the U0300 code causing communication issues in your vehicle? Read on to learn how to deal with this communication network problem and get your vehicle back on the road.
U0301: Software Incompatibility With ECM/PCM
Is the U0301 code causing communication issues in your vehicle? Read on to learn how to deal with this communication network problem and get your vehicle back on the road.
U0302: Software Incompatibility With Transmission Control Module
Is the U0302 code causing communication issues in your vehicle? Read on to learn how to deal with this communication network problem and get your vehicle back on the road.
U0303: Software Incompatibility With Transfer Case Control Module
Is the U0303 code causing communication issues in your vehicle? Read on to learn how to deal with this communication network problem and get your vehicle back on the road.
U0304: Software Incompatibility With Gear Shift Control Module "A"
Is the U0304 code causing communication issues in your vehicle? Read on to learn how to deal with this communication network problem and get your vehicle back on the road.