Codes › GENERIC › DTC-OBD2 › U0121
GENERIC • DTC-OBD2 • U0121 Category: CommunicationLost Communication With ABS Control Module
Communication lost with ABS module.
The vehicle network has lost communication with the ABS control module. This can disable ABS and stability control functions. Wiring issues or module faults are common causes.
Related DTC-OBD2 codes
- DTC-OBD2 U0300 — Internal Control Module Software Incompatibility
- DTC-OBD2 U0293 — Lost Communication With Hybrid Control Module
- DTC-OBD2 U0122 — Lost Communication With Vehicle Dynamics Control Module
- DTC-OBD2 U0102 — Lost Communication With Transfer Case Control Module
- DTC-OBD2 U0415 — Invalid Data Received From ABS Control Module
- DTC-OBD2 U0151 — Lost Communication With Restraints Control Module
Frequently Asked Questions
What does DTC-OBD2 code U0121 mean?
DTC-OBD2 code U0121 is a factory equipment code used by GENERIC to describe a specific vehicle configuration or component.
Where can I find DTC-OBD2 code U0121 on my car?
This code is typically found in the vehicle’s factory build data, service documentation, or can be confirmed by decoding the VIN.
Does DTC-OBD2 code U0121 affect maintenance or parts?
Yes. Factory codes determine correct parts selection, software compatibility, and service procedures for your exact vehicle configuration.
How can I verify DTC-OBD2 code U0121 for my vehicle?
The most reliable way is to order a complete Vehicle Data Sheet decoded directly from your vehicle’s VIN.