U2004 — Audio bus circuit open

Network (CAN bus, communication)

Audio bus circuit open

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Can I drive with U2004?

You can usually drive home and book an inspection within a few days.

Frequently asked questions

What does fault code U2004 mean?

U2004 means Audio bus circuit open.

Can I keep driving with U2004?

You can usually drive home and book an inspection within a few days.

Related fault codes

• U2000 — Audio bus communication error
• U2001 — Audio bus performance
• U2002 — Audio bus circuit short to battery
• U2003 — Audio bus circuit short to ground
• U2005 — Audio bus data integrity failure
• U2006 — Audio bus message count incorrect
• U2007 — Audio bus message checksum incorrect
• U2008 — MOST ring break
• U2009 — MOST ring break — no position change

Get a full diagnosis for U2004 with AutoUncover.