2004 Lincoln Navigator RWDFACTORY OEM SERVICE PROCEDURE

Entertainment Systems DTCS

ENTERTAINMENT SYSTEMS DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Source Perform Test
B2103 Antenna Not Connected Audio Unit Verify that the radio antenna is connected. CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test. If DTC B2406 is retrieved again, REMOVE the audio unit and SEND it to an authorized Ford audio system repair facility. TEST the system for normal operation after the repair.
B2401 Audio Tape Deck Mechanism Fault Audio Unit VERIFY that no cassette is inserted in the audio unit. CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test. If DTC B2401 is retrieved again, REMOVE the audio unit and SEND it to an authorized Ford audio system repair facility. TEST the system for normal operation.
B2402 Audio CD/DJ Thermal Shutdown Fault Audio Unit Go To PINPOINT TEST B: THE CD CHANGER IS INOPERATIVE/DOES NOT OPERATE CORRECTLY .
B2403 Audio CD/DJ Internal Fault Audio Unit Go To PINPOINT TEST B: THE CD CHANGER IS INOPERATIVE/DOES NOT OPERATE CORRECTLY .
B2404 Audio Steering Wheel Switch Circuit Fault Audio Unit Go To PINPOINT TEST K: THE AUXILIARY AUDIO CONTROL IS INOPERATIVE - STEERING WHEEL CONTROL .
B2405 Audio Single-Disc CD Player Thermal Shutdown Fault Audio Unit CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test. If DTC B2405 is retrieved again, REMOVE the audio unit and SEND it to an authorized Ford audio system repair facility. TEST the system for normal operation after the repair.
B2406 Audio Single-Disc CD Player Internal Fault Audio Unit CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test. If DTC B2406 is retrieved again, REMOVE the audio unit and SEND it to an authorized Ford audio system repair facility. TEST the system for normal operation after the repair.
B2913 Audio Subwoofer Not Connected Audio Unit Go To PINPOINT TEST H: THE SUBWOOFER IS INOPERATIVE-EXCEPT NAVIGATOR WITH NAVIGATION AUDIO UNIT .
U2003 Audio Compact Disc/Disc Jockey is Not Responding Audio Unit If equipped with CD/DJ, Go To PINPOINT TEST B: THE CD CHANGER IS INOPERATIVE/DOES NOT OPERATE CORRECTLY .
U2005 Audio Rear Seat Controller (RSC) Unit is Not Responding Audio Unit NOTE: U2005 is retrieved if RSC Unit is not present, disconnected or inoperative. If equipped with RSC, Go To PINPOINT TEST I: THE AUXILIARY AUDIO CONTROL IS INOPERATIVE - REAR SEAT CONTROLLER (RSC) UNIT .
U2014 Audio Subwoofer Unit is Not Responding Audio Unit Go To PINPOINT TEST H: THE SUBWOOFER IS INOPERATIVE-EXCEPT NAVIGATOR WITH NAVIGATION AUDIO UNIT .
U2026 Family Entertainment System is Not Responding Audio Unit Go To PINPOINT TEST H: THE SUBWOOFER IS INOPERATIVE-EXCEPT NAVIGATOR WITH NAVIGATION AUDIO UNIT .
A477 Audio Unit Configuration Audio Unit CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test. If DTC A477 is retrieved again, REMOVE the audio unit and SEND it to an authorized Ford audio system repair facility. TEST the system for normal operation after the repair.
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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.

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