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Diagnostic Trouble Code (DTC) Definitions

ANTI-LOCK BRAKE SYSTEM MODULE DTC INDEX

DTC Description Perform Test
B1342 ECU Defective (1)
B1485 Brake Pedal Input Circuit Shorted To Voltage (2)
B1676 Battery Voltage Out Of Range (2)
C1095 ABS Hydraulic Pump Motor Circuit Failure (2)
C1145 Right Front ABS Sensor Input Circuit Failure (2)
C1155 Left Front ABS Sensor Input Circuit Failure (2)
C1165 Right Rear ABS Sensor Input Circuit Failure (2)
C1175 Left Rear ABS Sensor Input Circuit Failure (2)
C1233 Left Front ABS Sensor Input Signal Missing (2)
C1234 Right Front ABS Sensor Input Signal Missing (2)
C1235 Right Rear ABS Sensor Input Signal Missing (2)
C1236 Left Rear ABS Sensor Input Signal Missing (2)
U1009 SCP Invalid/Missing Data For Engine Torque (3)
U1027 SCP Invalid/Missing Data For Engine RPM (3)
U1059 SCP Invalid/Missing Data For Transmission Range (PRNDL) (3)
(1) Using NGS tester, retrieve and document all continuous DTCs. Perform Anti-Lock Brake System (ABS) module self-test. If DTC B1342 is retrieved again, replace ABS module.
(2) Repair anti-lock brake system concern. See appropriate ANTI-LOCK article in BRAKES.
(3) Cause by Powertrain Control Module (PCM). Using NGS tester, perform PCM self-test and repair powertrain control concern. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
AUDIO CONTROL MODULE DTC INDEX

DTC Description Perform Test
B1342 ECU Defective (1)
B2401 Tape Deck Mechanism Fault (2)
B2402 CD/DJ Thermal Shutdown (3)
B2403 CD/DJ Internal Fault (3)
B2405 Single Disc Player Thermal Shutdown (4)
B2406 Single Disc Player Internal Fault (4)
U2003 CD/DJ Is Not Responding (3)
U2005 Rear Integrated Control Panel Is Not Responding (4)
U2008 Cellular Phone Is Not Responding (4)
(1) Using NGS tester, clear and document continuous DTCs. Perform Audio Control Module (ACM) self-test. If DTC B1342 is retrieved again, replace ACM.
(2) Verify No tape is in tape deck. Using NGS tester, clear and document continuous DTCs. Perform Audio Control Module (ACM) self-test. If DTC B2401 is retrieved again, repair or replace ACM as necessary.
(3) Repair audio system fault.
(4) DTC does not apply to this vehicle.
DRIVER'S DOOR MODULE DTC INDEX

DTC Description Perform Test
B1322 Driver's Door Ajar Circuit Short To Ground (1)
B1342 ECU Defective (2)
B1396 Door Lock Circuit Short To Voltage (3)
B1397 Door Unlock Circuit Short To Voltage (3)
B1517 Driver's Seat Occupied Switch Short To Voltage (4)
B1525 Keyless Entry Circuit Short To Voltage (4)
B1549 Master Window Switch Circuit Short To Voltage (5)
B1553 Decklid Release Circuit Short To Voltage (4)
B1751 Park/Neutral Switch Short To Voltage (4)
B2425 Remote Keyless Entry Out Of Synchronization (4)
(1) Perform DTC B1322: DRIVER'S DOOR AJAR CIRCUIT SHORT TO GROUND under DIAGNOSTIC TESTS in PASSIVE ANTI-THEFT SYSTEMS - CROWN VICTORIA & GRAND MARQUIS article.
(2) Using NGS tester, retrieve and document all continuous DTCs. Perform Driver's Door Module (DDM) self-test. If DTC B1342 is retrieved again, replace DDM.
(3) See appropriate wiring diagram in POWER DOOR LOCKS & TRUNK RELEASE article.
(4) See appropriate wiring diagram in REMOTE KEYLESS ENTRY SYSTEMS article.
(5) Perform TEST D: DRIVER'S WINDOW IS INOPERATIVE under SYSTEM TESTS in POWER WINDOWS - CROWN VICTORIA & GRAND MARQUIS article.
ELECTRONIC AUTOMATIC TEMPERATURE CONTROL MODULE DTC INDEX

DTC Description Perform Test
B1249 Blend Door Circuit Failure (1)
B1251 A/C In-Car Temperature Sensor Open Circuit (1)
B1253 A/C In-Car Temperature Sensor Circuit Short To Ground (1)
B1255 A/C Ambient Air Temperature Sensor Circuit Open (1)
B1257 A/C Ambient Air Temperature Sensor Circuit Short To Ground (1)
B1261 A/C Solar Radiation Sensor Circuit Short To Ground (1)
U1041 Invalid/Missing Data For Vehicle Speed (2)
U1073 Invalid/Missing Data For Engine Coolant (3)
U1222 Invalid/Missing Data For Interior Lights (4)
(1) Repair A/C system as necessary. See appropriate AUTOMATIC A/C-HEATER SYSTEMS article in appropriate lemon-25(R) AIR CONDITIONING & HEATING SERVICE & REPAIR manual.
(2) Repair vehicle speed sensor circuit. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
(3) Repair engine coolant temperature sensor circuit. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
(4) Repair interior lighting circuit as necessary. See AUTOLAMP SYSTEMS - CROWN VICTORIA & GRAND MARQUIS article.
ELECTRONIC CRASH SENSOR MODULE DTC INDEX

DTC (1) Description Perform Test
B1342 ECU Defective (2)
B1231 ECS Module Internal Fault (3)
B1921 ECS Module Crash Data Memory Full (3)
B1318 Low Battery Voltage (3)
C1414 Incorrect Vehicle Identification Code (3)
B1887 Driver's Air Bag Circuit Shorted To Ground (3)
B1916 Driver's Air Bag Circuit Shorted To Voltage (3)
B1925 Passenger's Air Bag Circuit Short To Voltage (3)
B1879 Unexpected Feature Present (3)
B1878 Unexpected Feature Present (3)
B1883 Unexpected Feature Present (3)
B1882 Unexpected Feature Present (3)
B1932 Driver's Air Bag Circuit Resistance High (3)
B1933 Passenger's Air Bag Circuit Resistance High (3)
B1934 Driver's Air Bag Circuit Resistance Low (3)
B1935 Passenger's Air Bag Circuit Resistance Low (3)
B1941 External Crash Sensor Open Circuit Shorted To Voltage (3)
B1901 External Crash Sensor Shorted To Ground (3)
B1871 Unexpected Feature Present (3)
B1889 Unexpected Feature Present (3)
B1877 Unexpected Feature Present (3)
B1885 Unexpected Feature Present (3)
B1881 Unexpected Feature Present (3)
B1886 Unexpected Feature Present (3)
B1884 Unexpected Feature Present (3)
B1890 Unexpected Feature Present (3)
B1892 Air Bag Tone Warning Indicator Circuit Shorted To Ground Or Open (3)
B1891 Air Bag Tone Warning Indicator Circuit Shorted To Voltage (3)
B2141 Nonvolatile Memory Configuration Failure (3)
B1869 Air Bag Indicator Inoperative (3)
B1870 Air Bag Indicator Shorted To Voltage (3)
(1) DTCs are listed in order of importance. Repair DTCs in order listed.
(2) Using NGS tester, retrieve and document all continuous DTCs. Perform Electronic Crash Sensor (ECS) module self-test. If DTC B1342 is retrieved again, replace ECS module.
(3) Repair supplemental air bag system concern. See DIAGNOSIS & TESTING article in appropriate lemon-25(R) AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.
LIGHTING CONTROL MODULE DTC INDEX

DTC Description Perform Test
B1300 Power Door Lock Circuit Failure (1)
B1310 Power Door Unlock Circuit Failure (1)
B1312 Headlight Input Short To Battery Voltage (2)
B1317 Battery Voltage High (3)
B1318 Battery Voltage Low (3)
B1319 Driver's Door Ajar Circuit Failure (4)
B1322 Driver's Door Ajar Circuit Short To Ground (2)
B1331 Decklid Ajar Rear Door Circuit Failure (4)
B1334 Decklid Ajar Rear Door Circuit Short To Ground (4)
B1340 ECS Tone Request Short To Ground (5)
B1342 ECU Defective (6)
B1343 Heated Rear Window Input Circuit Failure (7)
B1345 Heated Rear Window Input Circuit Short To Ground (7)
B1352 Ignition Key In Circuit Failure (8)
B1354 Ignition Key In Circuit Short To Ground (8)
B1359 Ignition RUN/ACC Input Circuit Failure (8)
B1361 Ignition RUN/ACC Input Circuit Short To Ground (8)
B1396 Power Door Lock Circuit Short To Voltage (1)
B1397 Power Door Unlock Circuit Short To Voltage (1)
B1442 Door Handle Switch Circuit Failure (2)
B1445 Door Handle Switch Circuit Short To Ground (2)
B1462 Seat Belt Switch Circuit Failure (5)
B1464 Seat Belt Switch Circuit Short To Voltage (5)
B1468 Chime Input Request Circuit Failure (5)
B1470 Headlight Input Circuit Failure (2)
B1555 Ignition RUN/START Circuit Failure (8)
B1557 Ignition RUN/START Circuit Short To Voltage (8)
B1563 Door Ajar Circuit Failure (2)
B1566 Door Ajar Circuit Short To Ground (2)
B1575 Parking Light Input Circuit Failure (2)
B1577 Parking Light Input Circuit Short To Voltage (2)
B1579 Panel Dim Increase Circuit Failure (9)
B1581 Panel Dim Increase Circuit Short To Voltage (9)
B1583 Panel Dim Decrease Input Circuit Failure (9)
B1585 Panel Dim Decrease Input Short To Voltage (9)
B1677 Alarm Panic Input Circuit Failure (10)
B1679 Alarm Panic Input Circuit Short To Voltage (10)
B1685 Dome Light Input Circuit Failure (2)
B1687 Dome Light Input Circuit Short To Voltage (2)
B1689 Autolamp Delay Circuit Failure (2)
B1692 Autolamp Delay Circuit Short To Ground (2)
B1693 Autolamp ON Circuit Failure (2)
B1695 Autolamp ON Circuit Short To Voltage (2)
B1790 Autolamp Sensor Circuit Failure (2)
B1792 Autolamp Sensor Circuit Short To Voltage (2)
B1872 Turn Signal/Hazard Power Feed Circuit Failure (2)
B1873 Turn Signal/Hazard Power Feed Circuit Short To Ground (2)
(1) See appropriate wiring diagram in POWER DOOR LOCKS & TRUNK RELEASE article.
(2) See AUTOLAMP SYSTEMS - CROWN VICTORIA & GRAND MARQUIS article.
(3) Check charging system. See appropriate GENERATORS article in STARTING & CHARGING SYSTEMS. If charging system is okay, check power and ground circuits to LCM. See appropriate wiring diagram in POWER DISTRIBUTION article in WIRING DIAGRAMS.
(4) Repair appropriate circuit. See appropriate wiring diagram in REMOTE KEYLESS ENTRY SYSTEMS and ILLUMINATION/INTERIOR LIGHTS articles.
(5) Repair appropriate circuit. See appropriate wiring diagram in WARNING SYSTEMS article.
(6) Using NGS tester, retrieve and document all continuous DTCs. Perform Lighting Control Module (LCM) self-test. If DTC B1342 is retrieved again, replace LCM.
(7) See appropriate wiring diagram in REAR WINDOW DEFOGGERS article.
(8) See STEERING COLUMN SWITCHES - CROWN VICTORIA & GRAND MARQUIS article.
(9) See appropriate INSTRUMENT PANELS article.
(10) Repair Red/Light Blue wire between LCM and DDM. See appropriate wiring diagram in REMOTE KEYLESS ENTRY SYSTEMS article. If wire is okay, replace LCM.
NATURAL GAS VEHICLE MODULE DTC INDEX

DTC Description Perform Test
B1291 Fuel Tank Pressure Sensor Circuit Failure (1)
B1220 Fuel Tank Pressure Sensor Circuit Short To Voltage (1)
B1222 Fuel Tank Temperature Sensor No. 1 Circuit Failure (1)
B1223 Fuel Tank Temperature Sensor No. 1 Circuit Open (1)
B1224 Fuel Tank Temperature Sensor No. 1 Circuit Short To Voltage (1)
B1225 Fuel Tank Temperature Sensor No. 1 Circuit Short To Ground (1)
B1226 Fuel Tank Temperature Sensor No. 2 Circuit Failure (1)
B1227 Fuel Tank Temperature Sensor No. 2 Circuit Open (1)
B1228 Fuel Tank Temperature Sensor No. 2 Circuit Short To Voltage (1)
B1229 Fuel Tank Temperature Sensor No. 2 Circuit Short To Ground (1)
B1317 Battery Voltage High (1)
B1318 Battery Voltage Low (1)
B1342 ECU Defective (1)
(1) See ANALOG INSTRUMENT PANELS - CROWN VICTORIA & GRAND MARQUIS article.
PASSIVE ANTI-THEFT SYSTEM MODULE DTC INDEX

DTC Description Perform Test
B1213 Anti-Theft Number Of Programmed Keys Is Below Minimum (1)(2)
B1232/B2103 PATS Transceiver Antenna Not Connected (2)
B1600 PATS Ignition Key Transponder Signal Not Received/Damaged Encoded Ignition Key Or Use Of Non-PATS Key (2)
B1601 PATS Received Incorrect Key Code From Ignition Key Transponder (2)
B1602 Invalid Key Code Format From Ignition Key Transponder (2)
B1681 PATS Transceiver Signal Is Not Received (2)
B2139 Security Identification Does Not Match Between PATS & PCM (2)
B2141 No Security Identification Exchange Between PATS & PCM (2)
U1147 Invalid Or Missing Data For Vehicle Security (2)
U1262 SCP Bus Communication Fault (3)
(1) If DTCs B1232, B1600, B1601, B1602 OR B1681 are also present, service these DTCs first then recheck codes.
(2) See PASSIVE ANTI-THEFT SYSTEMS - CROWN VICTORIA & GRAND MARQUIS article.
(3) Repair SCP bus communications concern. Perform TEST J: NO MODULE/NETWORK COMMUNICATIONS - BUS LINK  under SYSTEM TESTS.
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