DTC Charts

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For all U-codes listed in this chart, if no related symptoms are observed, disregard the DTC.

AUDIO UNIT DTC CHART

DTC	Description	Action
B1117	Audio Steering Wheel Button Stuck	VERIFY that no steering wheel control switches are stuck, and that no steering wheel control switch was pressed during the self-test. REPEAT as necessary. If no concern is found, go to Pinpoint Test G .
B1119	Audio Disc DVD Player Thermal Shutdown	ALLOW the audio unit to cool. CLEAR the DTCs. DISREGARD the DTC.
B1136	Audio Steering Wheel Switch #2 Circuit Failure	Go to Pinpoint Test G .
B1140	Map Disk Invalid	REMOVE the map DVD and CLEAN it. INSPECT for scratches, fingerprints, or damage, and REPAIR as necessary. VERIFY a valid map DVD is being used. If no concern is found, INSERT a known good map DVD. REPEAT the self-test. If the system operates correctly, the concern was caused by a damaged or invalid map DVD. If DTC B1140 is retrieved again, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
B1154	Subwoofer #1 Short to Ground	Go to Pinpoint Test E .
B1155	Subwoofer #1 Short to Battery	Go to Pinpoint Test E .
B1318	Battery Voltage Low	CLEAR the DTCs. TEST the charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION . If the charging system is OK, the DTC was set by a previous low voltage condition. No concern is found at this time. If the charging system is not OK, REFER to CHARGING SYSTEM - GENERAL INFORMATION to diagnose the low battery voltage condition.
B1342	ECU is Faulted	CLEAR the DTCs. CARRY OUT the self-test. If DTC B1342 is retrieved again, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
B2103	Antenna Not Connected	Go to Pinpoint Test A .
B2204	GPS Antenna Connection Open or Short	Go to Pinpoint Test M .
B2274	Phone Transceiver Active Circuit Failure	DISREGARD the DTC. It is not applicable for this vehicle. CLEAR the DTCs.
B2384	Audio Reverse Aid Mute Input CKT. Failure	DISREGARD the DTC. It is not applicable for this vehicle. CLEAR the DTCs.
B2404	Audio Steering Wheel Switch Circuit Failure	Go to Pinpoint Test G .
B2405	Audio Disc CD Player Thermal Shutdown Fault	The audio unit was over temperature. Audio operation will resume after the audio unit cools. This is normal operation. CLEAR the DTCs.
B2406	Audio Disc CD Player Internal Fault	NOTE: DTC B1342 will also be set. CLEAR the DTCs. REPEAT the self-test. If DTC B2406 is retrieved again, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
B2477	Module Configuration Failure	REFER to MODULE CONFIGURATION .
B2633	Driver-Front Microphone Circuit Failure	DISREGARD the DTC. The vehicle is not equipped with this feature.
B2656	DVD (Digital Versatile Disk) Error	NOTE: DTC B1342 will also be set. CLEAR the DTCs. REPEAT the self-test. If DTC B2656 is retrieved again, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
B2913 (Audiophile only)	Audio Subwoofer Not Connected	Go to Pinpoint Test E .
B2924	Audio Button Stuck	NOTE: If equipped with navigation, the hard key test can be used to verify a stuck button. VERIFY no audio unit buttons are stuck and that no audio unit button is pressed during the self-test. CLEAR the DTCs. REPEAT the self-test. If DTC B2924 is retrieved again, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
B2965	Audio System Speaker Circuit Fault	Go to Pinpoint Test B .
C1992	Vehicle Speed Circuit Failure	VERIFY the audio unit is configured to receive the vehicle speed signal through the medium speed controller area network (MS-CAN). REFER to MODULE CONFIGURATION .
P0812	Reverse Input Circuit	VERIFY the audio unit is configured to receive the reverse input signal through the MS-CAN. REFER to MODULE CONFIGURATION .
U0140	Lost Communication With Body Control Module (GEM)	NOTE: If no related concern is currently present, disregard the DTC. NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. VERIFY the operation of the illumination system and the accessory delay. If the illumination system or the accessory delay does not operate correctly, REFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION (illumination) or GLASS, FRAMES AND MECHANISMS (accessory delay). If the illumination system and the accessory delay operate correctly, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	NOTE: If no related concern is currently present, disregard the DTC. NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. CARRY OUT the smart junction box (SJB) self-test. If DTC U0155 is present in both the audio unit and the SJB, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . CLEAR the DTCs. REPEAT the self-test. If DTC U0155 is only present in the audio unit, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
U0159	Lost Communication With Parking Assist Control Module (PAM)	NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. Go to Symptom Chart .
U0193	Lost Communication With Digital Audio Control Module (SDARS)	NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. Go to Symptom Chart .
U0196	Lost Communication With Entertainment Control Module - Rear (AUX)	Go to Symptom Chart .
U0197	Lost Communication With Telephone Control Module	DISREGARD the DTC. The vehicle is not equipped with this feature.
U0238	Lost Communication With Digital Audio Control module "D" (DSP)	NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. Go to Symptom Chart .
U0249	Lost Communication With Entertainment Control Module - Rear "B" (RCU)	DISREGARD the DTC. The vehicle is not equipped with this feature.
U1900	CAN Communication Bus Fault - Receive Error	REFER to MODULE COMMUNICATIONS NETWORK .
U2050	No Application Present	CONFIGURE the audio unit. REFER to MODULE CONFIGURATION . REPEAT the self-test. If DTC U2050 is retrieved again, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
U2051	One or More Calibration Files Missing / Corrupt	CONFIGURE the audio unit. REFER to MODULE CONFIGURATION . REPEAT the self-test. If DTC U2050 is retrieved again, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.
U2473	Unexpected Vehicle Speed (VSS)	Go to Pinpoint Test P .

NOTE: For all U-codes listed in this chart, if no related symptoms are observed, disregard the DTC.

THX® AMPLIFIER DTC CHART

DTC	Description	Action
B1158	Subwoofer #2 Open	Go to Pinpoint Test D .
B1317	Battery Voltage High	CLEAR the DTCs. TEST the charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION . If the charging system is OK, the DTC was set by a previous over-charge condition. No concern is found at this time. If the charging system is not OK, REFER to CHARGING SYSTEM - GENERAL INFORMATION to diagnose the over-charging condition.
B1318	Battery Voltage Low	CLEAR the DTCs. TEST the charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION . If the charging system is OK, the DTC was set by a previous low voltage condition. No concern is found at this time. If the charging system is not OK, REFER to CHARGING SYSTEM - GENERAL INFORMATION to diagnose the low battery voltage condition.
B1342	ECU is Faulted	CLEAR the DTCs. CARRY OUT the self-test. If DTC B1342 is retrieved again, INSTALL a new THX® amplifier. REFER to Audio Amplifier - THX® . TEST the system for normal operation.
B2477	Module Configuration Failure	REFER to MODULE CONFIGURATION .
B2913	Audio Subwoofer Not Connected	Go to Pinpoint Test C .
B2925	Subwoofer Speaker Short Circuit	If the symptom is no audio from all speakers, go to Pinpoint Test D . If the symptom is no audio from the subwoofer, go to Pinpoint Test C .
B292A	Subwoofer #2 Speaker Short Circuit	NOTE: Despite the DTC description, this DTC applies to the THX® amplifier clip/enable circuit, not the subwoofer. Go to Pinpoint Test D .
B2965	Audio System Speaker Circuit Fault	If the symptom is no audio from all speakers, go to Pinpoint Test D . If the symptom is no audio from one or more (but not all) speakers, go to Pinpoint Test C .
C1992	Vehicle Speed Circuit Failure	DISREGARD the DTC. CLEAR the DTCs.
U0140	Lost Communication With Body Control Module (GEM)	NOTE: If no related concern is currently present, disregard the DTC. NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. CARRY OUT the audio unit self-test. If DTC U0140 is present in both the THX® amplifier and the audio unit, INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . CLEAR the DTCs. REPEAT the self-test. If DTC U0140 is only present in the THX® amplifier, INSTALL a new THX® amplifier. REFER to Audio Amplifier - THX® . TEST the system for normal operation.
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	NOTE: If no related concern is currently present, disregard the DTC. NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. CARRY OUT the SJB self-test. If DTC U0155 is present in both the THX® amplifier and the SJB, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . CLEAR the DTCs. REPEAT the self-test. If DTC U0155 is only present in the audio unit, INSTALL a new THX® amplifier. REFER to Audio Amplifier - THX® . TEST the system for normal operation.
U0184	Lost Communication With Radio (ACM)	NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. Go to Symptom Chart .
U0196	Lost Communication With Entertainment Control Module - Rear (AUX)	Go to Symptom Chart .
U2050	No Application Present	CONFIGURE the THX® amplifier. REFER to MODULE CONFIGURATION . REPEAT the self-test. If DTC U2050 is retrieved again, INSTALL a new THX® amplifier. REFER to Audio Amplifier - THX® . TEST the system for normal operation.
U2051	One or More Calibration Files Missing / Corrupt	CONFIGURE the THX® amplifier. REFER to MODULE CONFIGURATION . REPEAT the self-test. If DTC U2051 is retrieved again, INSTALL a new THX® amplifier. REFER to Audio Amplifier - THX® . TEST the system for normal operation.

NOTE: For all U-codes listed in this chart, if no related symptoms are observed, disregard the DTC.

NOTE: While running the satellite audio bezel diagnostic test, DTCs contain the characters "SAT" after the 5-digit DTC.

SATELLITE RADIO RECEIVER DTC CHART

DTC	Description	Action
B1031	SDARS Satellite Antenna Open	Go to Pinpoint Test J .
B1032	SDARS Satellite Antenna Short	Go to Pinpoint Test J .
B1318	Battery Voltage Low	CLEAR the DTCs. TEST the charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION . If the charging system is OK, the DTC was set by a previous low voltage condition. No concern is found at this time. If the charging system is not OK, REFER to CHARGING SYSTEM - GENERAL INFORMATION to diagnosis the low battery voltage condition.
B1342	ECU is Faulted	CLEAR the DTCs. CARRY OUT the self-test. If DTC B1342 is retrieved again, INSTALL a new satellite radio receiver. REFER to Satellite Radio Receiver . TEST the system for normal operation.
B2477	Module Configuration Failure	REFER to MODULE CONFIGURATION .
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	NOTE: If no related concern is currently present, disregard the DTC. NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. CARRY OUT the smart junction box (SJB) self-test. If DTC U0155 is present in both the satellite radio receiver and the SJB, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . CLEAR the DTCs. REPEAT the self-test. If DTC U0155 is only present in the satellite radio receiver, INSTALL a new satellite radio receiver. REFER to Satellite Radio Receiver . TEST the system for normal operation.
U0184	Lost Communication With Radio (ACM)	NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. Go to Symptom Chart .
U0196	Lost Communication With Entertainment Control Module - Rear (AUX)	Go to Symptom Chart .
U0197	Lost Communication With Telephone Control Module	DISREGARD the DTC. The vehicle is not equipped with this feature.
U0249	Lost Communication With Entertainment Control Module - Rear "B" (RCU)	DISREGARD the DTC. CLEAR the DTCs.
U0255	Lost Communication With Front Controls Interface Module	DISREGARD the DTC. CLEAR the DTCs.
U0256	Lost Communication With Front Display Interface Module	DISREGARD the DTC. CLEAR the DTCs.
U2050	No Application Present	CONFIGURE the satellite radio receiver. REFER to MODULE CONFIGURATION . REPEAT the self-test. If DTC U2050 is retrieved again, INSTALL a new satellite radio receiver. REFER to Satellite Radio Receiver . TEST the system for normal operation.

NOTE: For all U-codes listed in this chart, if no related symptoms are observed, disregard the DTC.

DVD PLAYER DTC CHART

DTC	Description	Action
B1119	Audio Disc DVD Player Thermal Shutdown	ALLOW the DVD player to cool. CLEAR the DTCs. DISREGARD the DTC.
B111F	LCD Thermal Shutdown	ALLOW the DVD player to cool. CLEAR the DTCs. DISREGARD the DTC.
B1317	Battery Voltage High	CLEAR the DTCs. TEST the charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION . If the charging system is OK, the DTC was set by a previous over-charge condition. No concern is found at this time. If the charging system is not OK, REFER to CHARGING SYSTEM - GENERAL INFORMATION to diagnosis the overcharging condition.
B1318	Battery Voltage Low	CLEAR the DTCs. TEST the charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION . If the charging system is OK, the DTC was set by a previous low voltage condition. No concern is found at this time. If the charging system is not OK, REFER to CHARGING SYSTEM - GENERAL INFORMATION to diagnosis the low battery voltage condition.
B1342	ECU is Faulted	CLEAR the DTCs. CARRY OUT the self-test. If DTC B1342 is retrieved again, INSTALL a new DVD player. REFER to Digital Versatile Disc (DVD) Player . TEST the system for normal operation.
B2477	Module Configuration Failure	REFER to MODULE CONFIGURATION .
B2656	DVD (Digital Versatile Disk) Error	CLEAR the DTCs. REPEAT the self-test. If DTC B2656 is retrieved again, INSTALL a new DVD player. REFER to Digital Versatile Disc (DVD) Player . TEST the system for normal operation.
B2924	Audio Button Stuck	VERIFY no DVD player buttons are stuck and that no DVD player button is pressed during the self-test. CLEAR the DTCs. REPEAT the self-test. If DTC B2924 is retrieved again, INSTALL a new DVD player. REFER to Digital Versatile Disc (DVD) Player . TEST the system for normal operation.
U0140	Lost Communication With Body Control Module (GEM)	NOTE: If no related concern is currently present, disregard the DTC. NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. VERIFY the operation of the illumination system and the accessory delay. If the illumination system or the accessory delay does not operate correctly, REFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION (illumination) or GLASS, FRAMES AND MECHANISMS (accessory delay). If the illumination system and the accessory delay operate correctly, INSTALL a new DVD player. REFER to Digital Versatile Disc (DVD) Player . TEST the system for normal operation.
U0184	Lost Communication With Radio (ACM)	NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. Go to Symptom Chart .
U0193	Lost Communication With Digital Audio Control Module (SDARS)	NOTE: Diagnose DTC B1318 (if present) before diagnosing this DTC. Go to Symptom Chart .
U2050	No Application Present	CONFIGURE the audio unit. REFER to MODULE CONFIGURATION . REPEAT the self-test. If DTC U2050 is retrieved again, INSTALL a new audio unit. REFER to Audio Unit . TEST the system for normal operation.