OBD Guide
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U2003

Audio Compact Disk/Disk Jockey Unit Is Not Responding

U2003 is an OBD-II diagnostic trouble code meaning: Audio Compact Disk/Disk Jockey Unit Is Not Responding. Common causes: audio unit power supply circuit interrupted, damage to the can bus. Estimated repair cost: $56–278.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • CD changer or DJ unit does not work
  • No sound from the audio system
  • Multimedia system hangs
  • Error message on display
  • Connected devices disappear

Causes

  • Audio unit power supply circuit interrupted
  • Damage to the CAN bus
  • Oxidation of connector contacts
  • CD/DJ unit malfunction
  • Software problems

How to Fix

  1. Check audio system fuses
  2. Inspect connectors and wiring harnesses
  3. Carry out CAN bus diagnostics
  4. Restart multimedia system
  5. Replace the CD/DJ unit if necessary

Related codes

U2000U2001U2002

FAQ

What does the U2003 code mean?

U2003 is an OBD-II diagnostic trouble code that indicates: Audio Compact Disk/Disk Jockey Unit Is Not Responding

What causes a U2003 error code?

The most common causes of U2003 include: Audio unit power supply circuit interrupted; Damage to the CAN bus; Oxidation of connector contacts; CD/DJ unit malfunction.

How do I fix a U2003 diagnostic trouble code?

To fix U2003: Check audio system fuses. Inspect connectors and wiring harnesses. Carry out CAN bus diagnostics. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U2003?

Yes, but get it checked soon

How much does it cost to fix U2003?

The estimated repair cost for U2003 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat