U2004: Audio Steering Wheel Control Unit is Not Responding
MediumNetwork/CommunicationNetwork Communication
What does U2004 mean?
U2004 is a diagnostic trouble code indicating "Audio Steering Wheel Control Unit is Not Responding". This code relates to your vehicle's network communication and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.
Common causes
- Faulty network communication component
- Wiring or connector issue in the related circuit
- Failed sensor providing incorrect readings
- Software/calibration issue requiring ECU update
- Related component causing secondary fault
What should you do?
Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.
Get a diagnosis for YOUR car
Code U2004 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.