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:
U0439: Invalid Data Received From All Terrain Control Module
Is the U0439 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.
U043A: Invalid Data Received From Suspension Control Module "B"
Is the U043A 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.
U043B: Invalid Data Received From Cruise Control Front Distance Range Sensor
Is the U043B 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.
U043C: Invalid Data Received From Cruise Control Front Distance Range Sensor
Is the U043C 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.
U043D: ISO/SAE Reserved
The U043D 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.
U043E: ISO/SAE Reserved
The U043E 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.
U043F: ISO/SAE Reserved
The U043F 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.
U0440: ISO/SAE Reserved
The U0440 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.
U0441: Invalid Data Received From Emissions Critical Control Information
Is the U0441 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.
U0442: Invalid Data Received From ECM/PCM "B"
Is the U0442 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.