U2004
Audio Steering Wheel Control Unit Is Not Responding
U2004 is an OBD-II diagnostic trouble code meaning: Audio Steering Wheel Control Unit Is Not Responding. Common causes: faulty steering wheel control unit, problems with wiring or connectors. Estimated repair cost: $33–167.
Symptoms
- Audio control buttons on the steering wheel do not work
- Lack of response to button presses
- Sometimes other steering wheel functions may not work
- Possible error messages on the display
Causes
- Faulty steering wheel control unit
- Problems with wiring or connectors
- Open power or ground circuit
- Software error in the control unit
- Damage to the steering column wiring harness
How to Fix
- Check the integrity of wiring and connectors
- Check the power supply and grounding of the control unit
- Scan the control unit for errors
- If necessary, replace the control unit
- Update control unit software
Related codes
FAQ
What does the U2004 code mean?
U2004 is an OBD-II diagnostic trouble code that indicates: Audio Steering Wheel Control Unit Is Not Responding
What causes a U2004 error code?
The most common causes of U2004 include: Faulty steering wheel control unit; Problems with wiring or connectors; Open power or ground circuit; Software error in the control unit.
How do I fix a U2004 diagnostic trouble code?
To fix U2004: Check the integrity of wiring and connectors. Check the power supply and grounding of the control unit. Scan the control unit for errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U2004?
Yes, but get it checked soon
How much does it cost to fix U2004?
The estimated repair cost for U2004 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat