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Diagnostic Trouble Code (DTC) Definitions

WARNING: This page is about a different car, the 1997 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
ANTI-LOCK BRAKE (ABS) CONTROL MODULE DTC DEFINITIONS

DTC Source Module (1) Description
B1342 ABS ECU Defective
B1676 ABS Battery Voltage Out Of Range
C1095 ABS ABS Hydraulic Pump Motor Circuit Failure
C1145 ABS RF Speed Sensor - Input Circuit Failure
C1155 ABS LF Speed Sensor - Input Circuit Failure
C1165 ABS RR Speed Sensor - Input Circuit Failure
C1175 ABS LR Speed Sensor - Input Circuit Failure
C1233 ABS LF Wheel Speed - Input Signal Missing
C1234 ABS RF Wheel Speed - Input Signal Missing
C1235 ABS RR Wheel Speed - Input Signal Missing
C1236 ABS LR Wheel Speed - Input Signal Missing
(1) See BRAKES - ANTI-LOCK article in BRAKES section for testing procedure.
DRIVER'S DOOR MODULE (DDM) DTC DEFINITIONS

DTC Source Module Description
B1319 DDM (1) Driver's Door Ajar - Circuit Short To Ground
B1342 DDM (2) ECU Is Defective
B1396 DDM (3) Power Door Lock - Circuit Short To Voltage
B1514 DDM (4) Driver's Door Handle Switch - Circuit Short To Ground
B1517 DDM (3) Seat Occupied Switch - Circuit Short To Voltage
B1525 DDM (3) Keyless Entry - Circuit Short To Voltage
B1549 DDM (5) Master Window Switch - Short To Voltage
B1553 DDM (3) Deck Lid Release - Circuit Short To Voltage
B1751 DDM (3) Park/Neutral Switch - Short To Voltage
(1) Check circuit for driver's door ajar switch and door ajar switch. If circuit and switch are okay, replace Driver's Door Module (DDM).
(2) See MIRRORS - POWER MEMORY article for testing procedure.
(3) See KEYLESS ENTRY SYSTEM - REMOTE article for testing procedure.
(4) This in an invalid DTC. DO NOT attempt to perform service procedures for this DTC.
(5) See POWER WINDOWS article for testing procedure.
AIR BAG DIAGNOSTIC MONITOR DTC DEFINITIONS

DTC Source Module (1) Description
B1342 AIR BAG ECU Defective
B1867 AIR BAG Low Battery Voltage
B1869 AIR BAG Inoperative Air Bag Indicator
B1913 AIR BAG Air Bag Circuit Shorted To Ground
B1914 AIR BAG Primary Crash Sensors - Shorted To Ground
B1921 AIR BAG Faulty Air Bag Monitor Ground/ Improper Mounting
B1922 AIR BAG Safing Sensor Output Circuit - Shorted to Voltage
B1923 AIR BAG Memory Clear Circuit Improperly Grounded
B1924 AIR BAG System Disarm Failure/Internal Air Bag Monitor Fault
B1932 AIR BAG High Resistance Or Open In Driver's Side Air Bag Circuit
B1933 AIR BAG High Resistance Or Open In Passenger's Side Air Bag Circuit
B1934 AIR BAG Low Resistance Or Short In Driver's Side Air Bag Circuit
B1935 AIR BAG Low Resistance Or Short In Passenger's Side Air Bag Circuit
B1941 AIR BAG Right Primary Crash Sensor Feed/ Return Circuit Open
B1942 AIR BAG Left Primary Crash Sensor Feed/ Feed/Return Circuit Open
B1944 AIR BAG Faulty Right Primary Crash Sensor Ground/Improper Mounting
B1945 AIR BAG Faulty Left Primary Crash Sensor Ground/Improper Mounting
(1) See AIR BAG RESTRAINT SYSTEM article for testing procedures.
ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE DTC DEFINITIONS

DTC Source Module Description
B1249 EATC (1) Blend Door Failure
B1251 EATC (1) A/C In Car Temperature Sensor - Open Circuit
B1253 EATC (1) A/C In Car Temperature Sensor - Short To Ground
B1255 EATC (1) A/C Ambient Temperature Sensor - Open Circuit
B1257 EATC (1) A/C Ambient Temperature Sensor - Short To Ground
B1260 EATC (1) A/C Solar Radiation Sensor - Short To Voltage
B1261 EATC (1) A/C Solar Radiation Sensor - Short To Ground
B1342 EATC (1) ECU Defective
U1073 PCM (2) SCP Invalid Or Missing Data For Engine Coolant
U1341 PCM (3) SCP Invalid Or Missing Data For Vehicle Speed
(1) See A/C-HEATER SYSTEM - AUTOMATIC article in AIR CONDITIONING & HEAT section for test procedure.
(2) Perform step 80) in CIRCUIT TEST XB in TESTS W/CODES - EEC-V article in ENGINE PERFORMANCE section.
(3) Testing information is not available from manufacturer.
LIGHTING CONTROL MODULE (LCM) DTC DEFINITIONS

DTC Source Module Description
B1312 LCM (1) Headlight Input Circuit - Short To Voltage
B1317 LCM (1) Battery Voltage High
B1318 LCM (1) Battery Voltage Low
B1322 LCM (1) Left Front Door Ajar Circuit - Short To Ground
B1334 LCM (1) Luggage Compartment Door Ajar Circuit - Short To Ground
B1340 LCM (1) Chime Input Request - Short To Ground
B1342 LCM (1) ECU Defective
B1345 LCM (1) Heated Backlite Input - Short To Ground
B1352 LCM (1) Ignition Key-In Circuit Failure
B1359 LCM (1) Ignition RUN/ACC Circuit Failure
B1396 LCM (1) Power Door Lock Circuit - Short To Voltage
B1397 LCM (1) Power Door Unlock Circuit - Short To Voltage
B1445 LCM (2) Door Handle Switch Circuit - Short To Ground
B1462 LCM (1) Seat Belt Switch Circuit Failure
B1491 LCM Ignition Switch Cylinder Sensor Circuit Failure
B1498 LCM Decklid Punch-Out - Short To Ground
B1522 LCM (1) Hood Switch - Short To Ground
B1555 LCM (1) Ignition RUN/START Circuit Failure
B1562 LCM (1) Door Lock Cylinder - Short To Ground
B1566 LCM (1) Door Ajar Circuit - Short To Ground
B1577 LCM (1) Parking Light Input Circuit - Short To Voltage
B1581 LCM (1) Dimmer Increase Circuit - Short To Voltage
B1585 LCM (1) Dimmer Decrease Circuit - Short To Voltage
B1679 LCM (1) Panic Alarm Input Circuit - Short To Voltage
B1687 LCM (1) Dome Light Input Circuit - Short To Voltage
B1689 LCM (1) Autolamp Delay Circuit Failure
B1692 LCM (1) Autolamp Delay Circuit - Short To Ground
B1693 LCM (1) Autolamp On Circuit Failure
B1695 LCM (1) Autolamp On Circuit - Short To Voltage
B1873 LCM (1) Turn Signal/Hazard Power Feed Circuit - Short To Ground
(1) See AUTOLAMP SYSTEM article for testing procedures.
(2) This in an invalid DTC. DO NOT attempt to perform service procedures for this DTC.
DRIVER'S SEAT MODULE (DSM) DTC DEFINITIONS

DTC Source Module Description
B1342 DSM (1) ECU Is Defective
B1529 DSM (1) Memory Set Switch - Short To Voltage
B1533 DSM (1) Memory 1 Switch - Short To Voltage
B1537 DSM (1) Memory 2 Switch - Short To Voltage
B1663 DSM (2) Driver Seat Front UP/DN Circuit Failure
B1664 DSM (2) Driver Seat Rear UP/DN Circuit Failure
B1665 DSM (2) Driver Seat FWD/BWD Circuit Failure
B1666 DSM (2) Driver Seat Recline Circuit Failure
B1667 DSM (1) Driver Mirror UP/DN Circuit Failure
B1668 DSM (1) Driver Mirror RT/LT Circuit Failure
B1669 DSM (1) Passenger Mirror UP/DN Circuit Failure
B1670 DSM (1) Passenger Mirror RT/LT Circuit Failure
B1676 DSM (2) Battery Voltage Out Of Range
B1697 DSM (1) Driver/Passenger Mirror Switch Short To Voltage
B1703 DSM (2) Driver Seat Recline Forward Switch Short To Voltage
B1707 DSM (2) Driver Seat Recline Rearward Switch - Short To Voltage
B1711 DSM (2) Driver Seat Front Up Switch - Short To Voltage
B1715 DSM (2) Driver Seat Front Down Switch - Short To Voltage
B1719 DSM (2) Driver Seat Forward Switch - Short To Voltage
B1723 DSM (2) Driver Seat Rearward Switch - Short To Voltage
B1727 DSM (2) Driver Seat Rear Up Switch - Short To Voltage
B1731 DSM (2) Driver Seat Rear Down Switch - Short To Voltage
B1735 DSM (1) Driver Mirror Vertical Switch - Short To Voltage
B1739 DSM . (1) Driver Mirror Horizontal Switch - Short To Voltage
B1743 DSM (1) Passenger Mirror Vertical Switch - Short To Voltage
B1747 DSM (1) Passenger Mirror Horizontal Switch Short To Voltage
B1751 DSM (1) Park/Neutral Switch - Short To Voltage
B1952 DSM (2) Rear Seat UP/DN Feedback - Short To Voltage
B1953 DSM (2) Rear Seat UP/DN Feedback - Short To Ground
B1956 DSM (2) Front Seat UP/DN Feedback - Short To Voltage
B1957 DSM (2) Front Seat UP/DN Feedback - Short To Ground
B1960 DSM (2) Seat Recline FWD/BWD Feedback - Short To Voltage
B1961 DSM (2) Seat Recline FWD/BWD Feedback - Short To Ground
B1964 DSM (2) Seat Horizontal FWD/RWD Feedback - Short To Voltage
B1965 DSM (2) Seat Horizontal FWD/RWD Feedback Short To Ground
U1256 DSM (2) No ISO-9141 Acknowledgment After 5 Retries
(1) See MIRRORS - POWER MEMORY article for testing procedure.
(2) See SEATS - POWER article for testing procedure.
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