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Diagnostic Trouble Code (DTC) Definitions

WARNING: This page is about a different car, the 1997 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
AIR BAG DIAGNOSTIC MONITOR DTC DEFINITIONS

DTC Source Module (1) Description
B1342 AIR BAG ECU Defective
B1867 AIR BAG Lost Or Low Battery Voltage
B1869 AIR BAG Inoperative Air Bag Indicator
B1913 AIR BAG Air Bag Circuit Shorted To Voltage
B1914 AIR BAG Air Bag Sensor 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 Crash Sensor Feed/Return Circuit Open
B1942 AIR BAG Left Crash Sensor Feed/Return Circuit Open
B1944 AIR BAG Faulty Right Crash Sensor Ground/ Improper Mounting
B1945 AIR BAG Faulty Left Crash Sensor Ground/ Improper Mounting
(1) See AIR BAG RESTRAINT SYSTEM article for testing procedures.
4-WHEEL ANTI-LOCK BRAKE SYSTEM (4WABS) CONTROL MODULE DTC DEFINITIONS

DTC Source Module (1) Description
B1432 ABS ECU Defective
C1095 4WABS Pump Motor
C1096 4WABS Pump Motor
C1113 4WABS Internal Power Relay
C1115 4WABS Internal Power Relay
C1145 4WABS Right Front Wheel Speed Sensor Input Circuit Failure
C1148 4WABS Right Front Wheel Speed Sensor Dynamic)
C1155 4WABS Left Front Wheel Speed Sensor Input Circuit Failure
C1158 4WABS Left Front Wheel Speed Sensor Dynamic)
C1169 4WABS Excessive Dump Time
C1184 4WABS 4WABS Timeout
C1185 4WABS Open Internal Power Relay
C1194 4WABS Left Front Dump Valve Failure
C1196 4WABS Left Front Dump Valve Failure
C1198 4WABS Left Front ISO Valve Failure
C1200 4WABS Left Front ISO Valve Failure
C1202 4WABS Rear Dump Valve Failure
C1204 4WABS Rear Dump Valve Failure
C1206 4WABS Rear ISO Valve Failure
C1208 4WABS Rear ISO Valve Failure
C1210 4WABS Right Front Dump Valve Failure
C1212 4WABS Right Front Dump Valve Failure
C1214 4WABS Right Front ISO Valve Failure
C1216 4WABS Right Front ISO Valve Failure
C1220 4WABS ABS Warning Indicator Failure
C1222 4WABS Wheel Speed Error (Dynamic)
C1225 4WABS Red Brake Warning Indicator Failure
C1226 4WABS Red Brake Warning Indicator Failure
C1229 4WABS Rear Wheel Speed Sensor Coherency Fault
C1230 4WABS Rear Wheel Speed Sensor Input Circuit Failure
C1233 4WABS Left Front Wheel Speed Sensor Dynamic)
C1234 4WABS Right Front Wheel Speed Sensor Dynamic)
C1237 4WABS Rear Wheel Speed Sensor (Dynamic)
C1265 4WABS Shorted Red Brake Light Relay
C1259 4WABS Right Front Wheel Speed Sensor Wheel Speed Comparison Fault
C1260 4WABS Rear Wheel Speed Sensor Wheel Speed Comparison Fault
(1) - See BRAKES - ANTI-LOCK article in BRAKES section for testing procedures.
GENERIC ELECTRONIC MODULE (GEM) DTC DEFINITIONS

DTC Source Module Description
B1214 GEM (1) Running Board Light Relay Coil Circuit Open Or Short To Ground
B1215 GEM (1) Running Board Light Relay Coil Circuit Short To Power
B1240 GEM (2) Rear Washer Pump Relay Coil Open Or Short To Ground
B1241 GEM (2) Rear Washer Pump Relay Coil Short To Battery
B1302 GEM (3) Accessory Delay Relay Coil Circuit Open Or Short To Ground
B1304 GEM (3) Accessory Delay Relay Coil Circuit Open Or Short To Battery
B1313 GEM (3) Battery Saver Relay Coil Circuit Open Or Short To Ground
B1315 GEM (3) Battery Saver Relay Coil Circuit Short To Battery
B1317 GEM (4) Battery Voltage High
B1318 GEM (4) Battery Voltage Low
B1322 GEM (1) Left Front Door Open Warning Light Switch Circuit Short To Ground
B1323 GEM (1) Door Ajar Light Open Or Short To Ground
B1325 GEM (1) Door Ajar Light Output Short To Battery
B1330 GEM (1)(5) Right Front Door Open Warning Light Switch Circuit Fault
B1334 GEM (1)(5) Liftgate Or Liftgate Glass Door Open Warning Light Switch Circuit Fault
B1338 GEM (1)(5) Right Rear Door Open Warning Light Switch Circuit Fault
B1342 GEM (6) ECU Defective
B1345 GEM (7) Rear Window Defogger Input Circuit Short To Ground
B1347 GEM (7) Rear Window Defogger Relay Circuit Failure
B1349 GEM (7) Rear Window Defogger Relay Circuit Short To Battery
B1352 GEM (8) Ignition Key-In Circuit Failure
B1355 GEM (8) Ignition Run Circuit Failure
B1359 GEM (8) Ignition Run/ACC Circuit Failure
B1365 GEM (8) Ignition Start Circuit Short To Battery
B1371 GEM (1) Interior Light Relay Circuit Failure
B1373 GEM (1) Interior Light Relay Coil Circuit Short To Battery
B1398 GEM (3) Power Window One-Touch Window Relay Circuit Failure
B1400 GEM (3) Power Window One-Touch Window Relay Coil Circuit Short To Battery
B1405 GEM (3) Power Window Left Down Switch Input Circuit Short To Battery
B1408 GEM (3) Power Window Left Up Switch Input Circuit Short To Battery
B1410 GEM (3) Power Window Left Motor Circuit Failure
B1426 GEM (5) Seat Belt Light Output Circuit Short To Battery
B1428 GEM (5) Seat Belt Light Output Circuit Failure
B1431 GEM (9) Front Wiper Run/Park Relay Coil Open Or Short To Ground
B1432 GEM (9) Front Wiper Run/Park Relay Coil Short To Battery
B1434 GEM (9) Front Wiper Hi/Low Relay Coil Open Or Short To Ground
B1436 GEM (9) Front Wiper Hi/Low Relay Circuit Short To Battery
B1438 GEM (9) Front Wiper/Washer Switch Input Circuit Failure
B1441 GEM (9) Front Wiper/Washer Switch Input Short To Ground
B1445 GEM (1) Door Handle Switch Circuit Short To Ground
B1446 GEM (9) Wiper Park Sense Circuit Open
B1450 GEM (9) Wiper Interval Delay Switch Input Circuit Failure
B1453 GEM (9) Wiper Interval Delay Switch Input Short To Ground
B1458 GEM (9) Front Washer Pump Relay Coil Open Or Short To Ground
B1460 GEM (9) Washer Pump Relay Coil Short To Battery
B1462 GEM (5) Seat Belt Switch Circuit Failure
B1466 GEM (9) Front Wiper Speed Not Switching
B1467 GEM (2) Wiper Motor Hi/Low Speed Circuit Short To Battery
B1473 GEM (2) Wiper Motor Low Speed Circuit Failure
B1475 GEM (2) Delayed Accessory Relay Contacts Short To Battery
B1476 GEM (2) Wiper Motor High Speed Circuit Failure
B1483 GEM (10) Brake Pedal Input Circuit Failure
B1485 GEM (10) Brake Pedal Input Circuit Short To Battery
B1575 GEM (1)(5) Left Rear Door Open Warning Light Switch Circuit Fault
B1577 GEM (11) Park/Headlight Light Input Circuit Short To Battery
B1610 GEM (1) Illuminated Entry Input Request Circuit Short To Ground
B1611 GEM (2) Rear Wiper Mode Select Switch Circuit Failure
B1614 GEM (2) Rear Wiper Mode Select Switch Circuit Short To Ground
B1816 GEM (2) Rear Wiper Motor Down Relay Circuit Short To Battery
B1818 GEM (2) Rear Wiper Motor Up Relay Circuit Short To Ground
B1820 GEM (2) Rear Wiper Motor Up Relay Circuit Short To Battery
B1839 GEM (2) Rear Wiper Motor Circuit Failure
B1840 GEM (9) Front Wiper Power Circuit Failure
C1107 GEM (12) 4-Wheel Anti-Lock Brake System Active Fault
P0500 GEM (10) Vehicle Speed Signal Circuit Failure
P1804 GEM (10) Transmission 4WD High Indicator Circuit Failure
P1806 GEM (10) Transmission 4WD High Indicator Short To Battery
P1808 GEM (10) Transmission 4WD Low Indicator Circuit Failure
P1810 GEM (10) Transmission 4WD Low Indicator Short To Battery
P1812 GEM (10) Transmission 4WD Mode Select Circuit Failure
P1815 GEM (10) Transmission 4WD Mode Select Short To Ground
P1819 GEM (10) Neutral Safety Switch Input Short To Ground
P1820 GEM (10) Transfer Case High To Low Shift Relay Coil Circuit Failure
P1822 GEM (10) Transfer Case High To Low Shift Relay Coil Short To Battery
P1824 GEM (10) Transmission 4WD Clutch Relay Circuit Failure
P1826 GEM (10) Transmission 4WD Clutch Relay Short To Battery
P1828 GEM (10) Transfer Case High To Low Shift Relay Circuit Failure
P1830 GEM (10) Transfer Case High To Low Shift Relay Coil Short To Battery
P1832 GEM (10) Transfer Case 4WD Solenoid Circuit Failure
P1834 GEM (10) Transfer Case 4WD Solenoid Short To Battery
P1836 GEM (10) Transfer Case Front Shaft Speed Sensor Fault
P1837 GEM (10) Transfer Case Rear Shaft Speed Sensor Fault
P1838 GEM (10) Transfer Case Shift Motor Circuit
P1846 GEM (10) Transfer Case Contact Plate "A" Open Circuit
P1850 GEM (10) Transfer Case Contact Plate "B" Open Circuit
P1854 GEM (10) Transfer Case Contact Plate "C" Open Circuit
P1858 GEM (10) Transfer Case Contact Plate "D" Open Circuit
P1866 GEM (10) Transfer Case System Concern, Contact Plate Failure
P1867 GEM (10) Transfer Case Contact Plate Open Or Short To Ground
P1868 GEM (10) Automatic 4WD Indicator Circuit Open Or Short To Ground
P1869 GEM (10) Automatic 4WD Indicator Circuit Short To Battery
P1874 GEM (10) Hall Effect Sensor Short To Ground
P1875 GEM (10) Hall Effect Sensor Short To Battery
P1876 GEM (10) Transfer Case 2WD Solenoid Circuit Failure
P1877 GEM (10) Transfer Case 2WD Solenoid Short To Battery
P1886 GEM (10) 4WD Initialization Fault (Front Driveline Did Not Synchronize To Rear)
P1891 GEM (10) Transfer Case Contact Plate Ground Return Open Circuit
(1) Test wiring for opens and/or shorts and repair as necessary. See wiring diagram in SYSTEM WIRING DIAGRAMS article in WIRING DIAGRAMS section.
(2) Test wiring for opens and/or shorts and repair as necessary. See wiring diagram in WIPER/WASHER SYSTEM article.
(3) See POWER WINDOWS article for testing procedures.
(4) See GENERATOR article in ELECTRICAL section for testing procedures.
(5) Test wiring for opens and/or shorts and repair as necessary. See wiring diagram in SYSTEM WIRING DIAGRAMS article in WIRING DIAGRAMS section.
(6) Replace Generic Electronic Module (GEM).
(7) See DEFOGGER - REAR WINDOW article for testing procedures.
(8) See STEERING COLUMN SWITCHES article for testing procedures.
(9) See WIPER/WASHER SYSTEM article for testing procedures.
(10) See TRANSFER CASE article in TRANSFER CASES section for testing procedures.
(11) Test wiring for opens and/or shorts and repair as necessary. See wiring diagram in SYSTEM WIRING DIAGRAMS article in WIRING DIAGRAMS section.
(12) See BRAKES - ANTI-LOCK article in BRAKES section for testing procedures.
REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DTC DEFINITIONS

DTC Source Module (1) Description
B1309 RAP Power Door Lock Circuit Shorted To Ground
B1341 RAP Power Door Unlock Circuit Shorted To Ground
B1485 RAP Brake Pedal Input Circuit Shorted To Battery
B1629 RAP PRNDL Reverse Input Shorted To Battery
(1) See KEYLESS ENTRY SYSTEM - REMOTE article.
PASSIVE ANTI-THEFT SYSTEM (PATS) MODULE DTC DEFINITIONS

DTC Source Module (1) Description
B1213 PATS Anti-Theft Number Of Programmed Keys Is Below Minimum
B1213 PATS Vehicle Security Status Message Missing
B1600 PATS Ignition Key Transponder Signal Not Received
B1601 PATS Incorrect Key Code From Ignition Key Transponder
B1602 PATS Invalid Format Key Code From Ignition Key Transponder
B1681 PATS Transceiver Module Signal Not Received
U1147 PATS Vehicle Security Status Message Missing
(1) See ANTI-THEFT SYSTEM - PASSIVE article for testing procedures.
4-WHEEL AIR SUSPENSION (4WAS) CONTROL MODULE DTC DEFINITIONS

DTC Source Module Description
B1318 4WASC (1) Battery Voltage Low
B1342 4WAS (1) ECU Internal Fault
B1485 4WAS (1) Brakelight Switch Input Short To Battery
B1566 4WAS (1) Door Ajar Input Short To Battery
B1749 4WAS (1) Park/Neutral Switch Circuit Fault
B2140 4WAS (1) Initialization Failure (Vehicle Ride Height Not Programmed)
C1439 4WAS (1) Acceleration Signal Input Circuit Fault
C1724 4WAS (1) Height Sensor Power Circuit Fault
C1725 4WAS (1) Front Pneumatic Fault
C1726 4WAS (1) Rear Pneumatic Fault
C1756 4WAS (1) Front Height Sensor Circuit Fault
C1760 4WAS (1) Rear Height Sensor Circuit Fault
C1770 4WAS (1) Vent Solenoid Circuit Fault
C1790 4WAS (1) Left Rear Air Spring Solenoid Circuit Fault
C1795 4WAS (1) Right Rear Air Spring Solenoid Circuit Fault
C1830 4WAS (1) Air Compressor Relay Circuit Fault
C1845 4WAS (1) Front Fill Solenoid Circuit Fault
C1865 4WAS (1) Rear Fill Solenoid Circuit Fault
C1869 4WAS (1) Gate Solenoid Circuit Fault
C1917 4WAS (2) Steering EVO Out-Of-Range Fault
P1807 4WAS (1) 4 X 4 High Indicator Circuit Short To Ground
P1808 4WAS (1) 4 X 4 Low Indicator Circuit Short To Ground
(1) See SUSPENSION article for testing procedures.
(2) See STEERING - ELECTRONIC article in STEERING section for testing procedures.
REAR AIR SUSPENSION (RAS) CONTROL MODULE DTC DEFINITIONS

DTC Source Module Description
B1318 RAS (1) Battery Voltage Low
B1342 RAS (1) ECU Internal Fault
B1485 RAS (1) Brakelight Switch Input Short To Battery
B1566 RAS (1) Door Ajar Input Short To Battery
B2140 RAS (1) Initialization Failure (Vehicle Ride Height Not Programmed)
C1439 RAS (1) Acceleration Signal Input Circuit Fault
C1724 RAS (1) Height Sensor Power Circuit Fault
C1726 RAS (1) Rear Pneumatic Fault
C1760 RAS (1) Rear Height Sensor Circuit Fault
C1770 RAS (1) Vent Solenoid Circuit Fault
C1790 RAS (1) Left Rear Air Spring Solenoid Circuit Fault
C1795 RAS (1) Right Rear Air Spring Solenoid Circuit Fault
C1830 RAS (1) Air Compressor Relay Circuit Fault
C1917 RAS (2) Steering EVO Out-Of-Range Fault
(1) See SUSPENSION article for testing procedures.
(2) See STEERING - ELECTRONIC article in STEERING section for testing procedures.
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