OBD-II · CODE FAMILY
Codes U20xx — what they mean
U20xx is a family of 23 manufacturer-specific OBD2 codes covering network and electrical faults. Each U20xx code below links to its own page with causes, diagnosis and the parts to fix it.
23 codesNetwork systems
FAMILY
RangeU2000–U20BB
Codes23
TROUBLEATLAS APP
01All codes in this family
One rich, indexed page — not thousands of empty ones. Each code links to its own page.
| Code | Meaning — click to open the code page | System | Severity |
|---|---|---|---|
| U2000 | Audio Rear Control Unit is Not Responding → /auto/codes/u2000/ Audio Rear Control Unit is Not Responding | Network | Medium |
| U2001 | Audio Tape Deck Unit is Not Responding → /auto/codes/u2001/ Audio Tape Deck Unit is Not Responding | Network | Medium |
| U2002 | Audio Bezel is Not Responding → /auto/codes/u2002/ Audio Bezel is Not Responding | Network | Medium |
| U2003 | Audio Compact Disk / Disk Jockey Unit is Not Responding → /auto/codes/u2003/ Audio Compact Disk / Disk Jockey Unit is Not Responding | Network | Medium |
| U2004 | Audio Steering Wheel Control Unit is Not Responding → /auto/codes/u2004/ Audio Steering Wheel Control Unit is Not Responding | Network | Medium |
| U2005 | Audio Rear Integrated Control Panel Unit is Not Responding → /auto/codes/u2005/ Audio Rear Integrated Control Panel Unit is Not Responding | Network | Medium |
| U2006 | Audio Remote Climate Control Unit is Not Responding → /auto/codes/u2006/ Audio Remote Climate Control Unit is Not Responding | Network | Medium |
| U2007 | Audio Navigation Unit is Not Responding → /auto/codes/u2007/ Audio Navigation Unit is Not Responding | Network | Medium |
| U2008 | Audio Phone is Not Responding → /auto/codes/u2008/ Audio Phone is Not Responding | Network | Medium |
| U2009 | Audio Front Control Module (ACM) is Not Responding → /auto/codes/u2009/ Audio Front Control Module (ACM) is Not Responding | Network | Medium |
| U2010 | Module is Not Responding (Non SCP) → /auto/codes/u2010/ Module is Not Responding (Non SCP) | Network | Medium |
| U2011 | OBD II fault code U2011 is a generic trouble code that is de → /auto/codes/u2011/ OBD II fault code U2011 is a generic trouble code that is defined as, “Module Transmitted Invalid Data (Non-SCP)”, and is set when the PCM (Powertrain | Network | Medium |
| U2012 | Communication Bus Error (Non SCP) → /auto/codes/u2012/ Communication Bus Error (Non SCP) | Network | Medium |
| U2013 | Compass Module is not Responding → /auto/codes/u2013/ Compass Module is not Responding | Network | Medium |
| U2014 | Audio Subwoofer Unit is Not Responding → /auto/codes/u2014/ Audio Subwoofer Unit is Not Responding | Network | Medium |
| U2015 | Signal Link Fault (Non SCP) → /auto/codes/u2015/ Signal Link Fault (Non SCP) | Network | Medium |
| U2016 | Signal Link Short to Ground (Non SCP) / From NGV Module → /auto/codes/u2016/ Signal Link Short to Ground (Non SCP) / From NGV Module | Network | Medium |
| U2017 | Driver Side Crash Sensor Communication Fault (Non SCP) → /auto/codes/u2017/ Driver Side Crash Sensor Communication Fault (Non SCP) | Network | Medium |
| U2018 | Passenger Side Crash Sensor Communication Fault (Non SCP) → /auto/codes/u2018/ Passenger Side Crash Sensor Communication Fault (Non SCP) | Network | Medium |
| U2019 | Audio Voice Module Not Responding → /auto/codes/u2019/ Audio Voice Module Not Responding | Network | Medium |
| U2020 | Audio Center Amp is not responding → /auto/codes/u2020/ Audio Center Amp is not responding | Network | Medium |
| U2021 | Invalid /fault data received (Non SCP) → /auto/codes/u2021/ Invalid /fault data received (Non SCP) | Network | Medium |
| U20BB | Communication Loss With Tcm → /auto/codes/u20bb/ Communication Loss With Tcm | Network | Medium |
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