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:
U011B: Lost Communication With Rocker Arm Control Module A
Is the U011B 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.
U011C: Lost Communication With Rocker Arm Control Module B
Is the U011C 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.
U011D: Lost Communication With All Wheel Drive Control Module
Is the U011D 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.
U011E: ISO/SAE Reserved
The U011E 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.
U011F: ISO/SAE Reserved
The U011F 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.
U0120: Lost Communication with Starter Generator Control Module
Is the U0120 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.
U0121: Lost Communication With Anti-Lock Brake System (ABS) Control Module
Is the U0121 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.
U0122: Lost Communication With Vehicle Dynamics Control (VDC) Module
Is the U0122 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.
U0123: Lost Communication With Yaw Rate Sensor (YRS) Module
Is the U0123 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.
U0124: Lost Communication With Lateral Acceleration Sensor (LAS) Module
Is the U0124 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.