Audio Unit Diagnostic Trouble Code (DTC) Index
WARNING: This page is about a different car, the 2003 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The audio unit and the diagnostic tool use the same diagnostic trouble codes.
AUDIO UNIT DIAGNOSTIC TROUBLE CODE (DTC) INDEX
| DTC | Description | Source | Action |
|---|---|---|---|
| B1342 | ECU is Defective | Audio Unit | CLEAR and DOCUMENT the DTCs. CARRY OUT the Audio Unit On-Demand Self-Test. REMOVE the audio unit and SEND it to an authorized audio system repair facility if DTC B1342 is retrieved again. REFER to AUDIO UNIT . TEST the system for normal operation. |
| B2103 | Antenna Not Connected | Audio Unit | Go To PINPOINT TEST E . |
| B2913 | Audio Subwoofer Not Connected | Audio Unit | Go To PINPOINT TEST I . |
| B2401 | Audio Tape Deck Mechanism Fault | Audio Unit | VERIFY that no tape is inserted in the audio unit. CLEAR and DOCUMENT the DTCs. CARRY OUT the Audio Unit On-Demand Self-Test. If DTC B2401 is retrieved again, REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation. |
| B2403 | Audio CD/DJ Internal Fault | Audio Unit | Go To PINPOINT TEST C . |
| B2405 | Audio Single-Disc CD Changer Thermal Shutdown Fault | Audio Unit | Let the CD mechanism cool down and try playing CD after some time (approximately 30 minutes). CLEAR and DOCUMENT the DTCs. CARRY OUT the Audio unit ON-Demand Self-Test. If DTC B2405 is retrieved again, REMOVE the audio unit and SEND it to an authorized audio system repair facility. TEST the system for normal operation. |
| B2406 | Audio Single-Disc CD Changer Internal Fault | Audio Unit | CLEAR and DOCUMENT the DTCs. REMOVE the audio unit and SEND it to an authorized audio system repair facility. TEST the system for normal operation. |
| B2477 | Module Configuration Failure | Audio Unit | REFER to MODULE CONFIGURATION . |
| C1976 | Audio Steering Wheel Switch Circuit-Open Circuit / Short to Battery | Audio Unit | Go To PINPOINT TEST J . |
| C1977 | Audio Steering Wheel Switch Circuit-Short to Ground | Audio Unit | Go To PINPOINT TEST J . |
| U1262 | SCP (J1850) Communication Bus Fault | Audio Unit | Check SCP communication with audio unit using the diagnostic tool. REMOVE the audio unit and SEND it to an authorized audio system repair facility. TEST the system for normal operation. |
| U2003 | Audio Compact Disc/Disc Jockey is Not Responding | Audio Unit | If equipped with CD/DJ, Go To PINPOINT TEST C . |
| U2005 | Rear Integrated Control Panel Unit is Not Responding | Audio Unit | Not applicable. The vehicle is not equipped with (rear integrated control panel). |
| U2008 | Audio Phone is Not Responding | Audio Unit/Phone Module | Not applicable. The vehicle is not equipped with (telematics phone system). |
| U2024 | Audio Redundant Steering Wheel Control is Not Responding | Audio Unit | Go To PINPOINT TEST K . |
NAVIGATION SYSTEM MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX
| DTC | Description | Source | Action |
|---|---|---|---|
| B2103 | Antenna Not Connected | Navigation System Module | Go To PINPOINT TEST E . |
| B2139 | Data Mismatch | Navigation System Module | Check the software version. MODULE CONFIGURATION . |
| B2208 | Navigation System Module to Audio Unit Communication Error | Navigation System Module | REFER to NAVIGATION SYSTEM . |
| B2403 | Audio CD/DJ Internal Fault | Navigation System Module | REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation. |
| B2404 | Audio Steering Wheel Switch Circuit Fault | Navigation System Module | Go To PINPOINT TEST J . |
| B2477 | Module Configuration Failure | Navigation System Module | REFER to MODULE CONFIGURATION . |
| B2858 | VNR is Defective | Navigation System Module | REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation. |
| B2913 | Audio Subwoofer is Not Connected | Navigation System Module | Go To PINPOINT TEST M . |
| C1192 | Vehicle Speed Circuit Failure | Navigation System Module | If the map icon functions correctly, REMOVE the audio unit and send it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation. If the map icon does not function correctly, REFER to NAVIGATION SYSTEM for further information. |
| U2003 | Audio Compact Disk/Disk Jockey Unit is Not Responding | Navigation System Module | Not Applicable |
| U2005 | Audio Rear Integrated Control Panel Unit is Not Responding | Navigation System Module | For Ultimate vehicles, Go To PINPOINT TEST K . |
| U2026 | Family Entertainment System Not Responding | Navigation System Module | Not Applicable |