Enter the error code and car brand

Interaction between electronic units

Code: U2139 - The car’s computer isn’t able to communicate with the steering column switch group, which controls functions like lights and wipers.

Data system: Modern cars use a variety of electronic systems that exchange data with each other via different networks, including CAN (Controller Area Network). The U2139 error on Opel indicates that data cannot be transmitted from the steering column (steering wheel switches) to the system.

Steering column switches: These are the buttons and switches you use to control various functions, such as adjusting the volume on the steering wheel, controlling the onboard computer, cruise control buttons, etc. These components are connected to the car's main control units.

The models most frequently affected by the U2139 error include the Opel Astra, Opel Insignia, Opel Corsa, Opel Zafira, and Opel Kadett.

DTC U2139 Opel - causes

Damaged wiring or connectors leading to the steering column.
Malfunctions in one of the control units responsible for the steering column.
System overload, data transmission failure, which can be caused by various external factors.

Severity of U2139 error

The U2139 error may not be critical, but it can lead to issues with important systems of the car, such as cruise control or the onboard computer. Therefore, it is best not to delay diagnostics and fixing the issue.

What to do when encountering U2139 error on Opel?

Check the wiring and connectors: Inspect all connections leading to the steering column for damage, contamination, or corrosion.
Diagnosis by a specialist: Visit a service center for deeper diagnostics and checking the control units related to this system.
Replace faulty components: If the issue is identified in the wiring or connector, they may need to be replaced. If a control unit is faulty, it will also need to be replaced.

Conclusion

Errors related to the steering column control units can affect safety and driving comfort, but they can be fixed. The sooner you visit a service, the less likely you will encounter more serious failures in the future.

Video for "Error u2139" on YouTube