Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 284 (INFORMATION CENTER AND ENTERTAINMENT SYSTEM)DIAGNOSIS AND TESTINGINFORMATION AND ENTERTAINMENT SYSTEMAUDIO CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX
2010 Mercury Mariner Hybrid, AWD
Audio Control Module Diagnostic Trouble Code (DTC) Index
2010 Mercury Mariner Hybrid, AWDSECTION Audio Control Module Diagnostic Trouble Code (DTC) Index
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
AUDIO CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX
| DTC | Description | Source | Action |
|---|---|---|---|
| B1342 | ECU is Defective | Audio Unit | DOCUMENT and CLEAR the DTCs. CARRY OUT the audio control module on-demand self-test. If DTC B1342 is retrieved again, REMOVE the audio unit. REFER to AUDIO UNIT . SEND it to an authorized audio system repair facility. TEST the system for normal operation after the repair. |
| B2401 | Audio Tape Deck Mechanism Fault | Audio Unit | VERIFY that no tape is inserted in the audio unit. DOCUMENT and CLEAR the DTCs. CARRY OUT the audio control module on-demand self-test. If DTC B2401 is retrieved again, REMOVE the audio unit. REFER to AUDIO UNIT . SEND it to an authorized audio system repair facility. TEST the system for normal operation after the repair. |
| B2403 | Audio CD/DJ Internal Fault | Audio Unit | DOCUMENT and CLEAR the DTCs. CARRY OUT the audio control module on-demand self-test. If DTC B2401 is retrieved again, REMOVE the audio unit. REFER to AUDIO UNIT . SEND it to an authorized audio system repair facility. TEST the system for normal operation after the repair. |
| B2405 | Audio Single-Disc CD Player Thermal Shutdown Fault | Audio Unit | Not applicable. The vehicle is not equipped with a single-disc CD. DOCUMENT and CLEAR the DTCs. CARRY OUT the audio control module self-test. |
| B2406 | Audio Single-Disc CD Player Internal Fault | Audio Unit | Not applicable. The vehicle is not equipped with a single-disc CD. DOCUMENT and CLEAR the DTCs. CARRY OUT the audio control module self-test. |
| B2477 | Module Configuration Failure | Audio Unit | REFER to IDENTIFICATION CODES . |
| U2003 | Audio CD/Disc Jockey is Not Responding | Audio Unit | Not applicable. The vehicle is not equipped with a remote CD player. DOCUMENT and CLEAR the DTCs. CARRY OUT the audio control module self-test. |
| U2005 | Audio Rear Integrated Control Panel Unit is Not Responding | Audio Unit | Not applicable. The vehicle is not equipped with a rear auxiliary audio controls. DOCUMENT and CLEAR the DTCs. CARRY OUT the audio control module self-test. |
| U2008 | Audio Phone is Not Responding | Audio Unit | Not applicable. The vehicle is not equipped with an audio phone. DOCUMENT and CLEAR the DTCs. CARRY OUT the audio control module self-test. |
| U2024 | Audio Redundant Steering Wheel Control is Not Responding | Audio Unit | GO to PINPOINT TEST E . |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.