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Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2002 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
ABS CONTROL MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC Description Perform Test
B1318 Battery Voltage Low (1)
B1342 ABS Control Module Defective (2)
B1484 Brake Pedal Input Circuit Open (1)
B1596 Repair Continuous DTCs (3)
C1095 ABS Hydraulic Pump Motor Circuit Failure (1)
C1145 Right Front ABS Sensor Input Circuit Failure (1)
C1155 Left Front ABS Sensor Input Circuit Failure (1)
C1165 Right Rear ABS Sensor Input Circuit Failure (1)
C1175 Left Rear ABS Sensor Input Circuit Failure (1)
C1222 Anti-Lock Brake Sensor Mismatch (1)
C1233 Left Front ABS Sensor Input Signal Missing (1)
C1234 Right Front ABS Sensor Input Signal Missing (1)
C1235 Right Rear ABS Sensor Input Signal Missing (1)
C1236 Left Rear ABS Sensor Input Signal Missing (1)
C1266 ABS Valve Power Relay Circuit Failure (2)
C1805 Mismatched PCM &/Or ABS Control Module (4)
U1009 Invalid/Missing Data For Engine Torque (5)
U1027 Invalid/Missing Data For Engine RPM (5)
U1059 Invalid/Missing Data For Transmission Range Switch (5)
U1083 Invalid/Missing Data For Engine System (5)
U1262 SCP Bus Communication Fault (6)
(1) Repair ABS. See appropriate ANTI-LOCK article in BRAKES.
(2) Replace ABS control module.
(3) Repair all DTCs retrieved.
(4) Using scan tool, clear all DTCs. If DTC C1805 is retrieved again, ensure ABS control module and PCM being used are correct for application. Replace PCM and/or ABS control module as necessary. Using scan tool, clear DTCs and perform ABS control module self-test.
(5) Caused by PCM. Using scan tool, perform PCM self-test. For PCM DTC testing procedures, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
(6) Service all other DTCs first. After all other DTC concerns have been repaired, perform TEST G: NO MODULE/NETWORK COMMUNICATION - SCP NETWORK  under SYSTEM TESTS.
GENERIC ELECTRONIC MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC Description Perform Test
B1217 Horn Relay Coil Circuit Failure (1)
B1218 Horn Relay Coil Circuit Short To Voltage (1)
B1312 Headlight Input Circuit Short To Voltage (2)
B1317 Battery Voltage High (3)
B1318 Battery Voltage Low (3)
B1322 Driver's Door Ajar Circuit Short To Ground (4)
B1330 Passenger's Door Ajar Circuit Short To Ground (4)
B1334 Deck Lid/Rear Door Ajar Circuit Short To Ground (4)
B1339 Chime Input Request Circuit Short To Voltage (5)
B1340 Chime Input Request Circuit Short To Ground (5)
B1342 GEM Defective (6)
B1353 Key-In Ignition Circuit Open (5)
B1359 Ignition Switch RUN/ACC Circuit Failure (1)
B1396 Power Door Lock Circuit Short To Voltage (4)
B1397 Power Door Unlock Circuit Short To Voltage (4)
B1405 Driver's Power Window Down Circuit Short To Voltage (7)
B1408 Driver's Power Window Up Circuit Short To Voltage (7)
B1410 Driver's Power Window Motor Circuit Failure (7)
B1426 Seat Belt Indicator Circuit Short To Voltage (5)
B1428 Seat Belt Indicator Circuit Failure (5)
B1431 Wiper On/Off Relay Circuit Failure (8)
B1432 On/Off Relay Circuit Short To Voltage (8)
B1434 Wiper High/Low Relay Coil Circuit Failure (8)
B1436 Wiper High/Low Relay Coil Circuit Short To Voltage (8)
B1438 Wiper Switch Circuit Failure (8)
B1441 Wiper Switch Circuit Short To Ground (8)
B1446 Wiper Park Sense Circuit Failure (8)
B1448 Wiper Park Sense Circuit Short To Voltage (8)
B1450 Wiper Wash/Delay Switch Circuit Failure (8)
B1453 Wiper Wash/Delay Switch Circuit Short To Ground (8)
B1458 Wiper Washer Pump Relay Circuit Failure (8)
B1460 Wiper Washer Pump Relay Coil Circuit Short To Voltage (8)
B1462 Seat Belt Switch Circuit Failure (5)
B1466 Wiper High/Low Speeds Not Switching (8)
B1473 Wiper Motor Low Speed Circuit Failure (8)
B1476 Wiper Motor High Speed Circuit Failure (8)
B1498 Deck Lid Punch-Out Sensor Short To Ground (4)
B1551 Deck Lid Release Circuit Failure (4)
B1553 Deck Lid Release Circuit Short To Voltage (4)
B1555 Ignition RUN/START Circuit Failure (1)
B1603 Anti-Theft Indicator Circuit Failure (9)
B1605 Anti-Theft Indicator Circuit Short To Voltage (9)
B1687 Dome Light Input Circuit Short To Voltage (10)
B1833 Door Unlock Disarm Switch Circuit Short to Ground (9)
B2486 Left Front Parking Light Output Relay Circuit Failure (9)
B2488 Right Front Parking Light Output Relay Circuit Failure (9)
C1189 Brake Fluid Level Sensor Input Short To Ground (5)
C1223 Brake Warning Light Output Circuit Failure (5)
C1225 Brake Warning Light Output Circuit Short To Voltage (5)
(1) See STEERING COLUMN - SWITCHES article for testing procedure.
(2) Repair wiring in HEADLIGHT SYSTEM as necessary. See WIRING DIAGRAMS .
(3) Check charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. If charging system is okay, check POWER AND GROUND CIRCUIT DISTRIBUTION to GEM. See WIRING DIAGRAMS .
(4) See POWER DOOR LOCKS & REMOTE KEYLESS ENTRY SYSTEMS article for testing procedure.
(5) See ANALOG INSTRUMENT PANELS article for testing procedure.
(6) Using scan tool, retrieve and document all continuous DTCs. Perform GEM self-test. If DTC B1342 is retrieved again, replace GEM.
(7) See POWER WINDOWS article for testing procedure.
(8) See WIPER/WASHER SYSTEM article for testing procedure.
(9) See PASSIVE ANTI-THEFT SYSTEMS article for testing procedure.
(10) Repair wiring in INTERIOR LIGHT SYSTEM as necessary. See WIRING DIAGRAMS .
INSTRUMENT CLUSTER DIAGNOSTIC TROUBLE CODE INDEX

Scan Tool DTC Description Perform Test
B1202 Fuel Sender Circuit Open (1)
B1204 Fuel Sender Short To Ground (1)
B1213 Anti-Theft No. Of Programmed Ignition Keys Is Below Minimum (2)
B1232 Or B2103 Defective Transceiver (2)
B1317 Battery Voltage High (3)
B1318 Battery Voltage Low (3)
B1342 ECU Defective (4)
B1356 Ignition Run Circuit Open (5)
B1364 Ignition Start Circuit Open (5)
B1600 PATS Ignition Key Transponder Signal Not Received (2)
B1601 PATS Received Incorrect Key-Code From Transponder (2)
B1602 PATS Received Invalid Key-Code Format From Transponder (2)
B1681 PATS Transceiver Signal Not Received (2)
B2139 Security Identification Does Not Match Between Instrument Cluster & PCM (2)
B2141 NVM Configuration Failure (2)
B2143 NVM Memory Failure (6)
C1284 Oil Pressure Switch Failure (1)
U1147 SCP Invalid/Missing Data For Vehicle Security (2)
U1262 Missing SCP Message (7)
(1) See ANALOG INSTRUMENT PANELS article for testing procedure.
(2) See PASSIVE ANTI-THEFT SYSTEMS article for testing procedure.
(3) Check charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. If charging system is okay, check POWER AND GROUND DISTRIBUTION circuits to instrument cluster, see WIRING DIAGRAMS .
(4) Using WDS or NGS tester, retrieve and document all continuous DTCs. Perform instrument cluster self-test. If DTC B1342 is retrieved again, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION.
(5) See STEERING COLUMN - SWITCHES article for testing procedure.
(6) Replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION.
(7) Service all other DTCs first. After all other DTC concerns have been repaired, perform TEST G: NO MODULE/NETWORK COMMUNICATION - SCP NETWORK  under SYSTEM TESTS.
RESTRAINT CONTROL MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC (1) Description Perform Test
B1342 RCM Defective (2)
B1231 RCM Crash Data Memory Full (2)
B1921 RCM Bracket Ground Resistance High (2)
C1414 Incorrect Vehicle Identification Code (2)
B1887 Driver's Side Air Bag Circuit Short To Ground (2)
B1916 Driver's Side Air Bag Circuit Short To Voltage (2)
B1888 Passenger's Side Air Bag Circuit Short To Ground (2)
B1925 Passenger's Side Air Bag Circuit Short To Voltage (2)
B1932 Driver's Side Air Bag Circuit Resistance High (2)
B1933 Passenger's Side Air Bag Circuit Resistance High (2)
B1934 Driver's Side Air Bag Circuit Resistance Low (2)
B1935 Passenger's Side Air Bag Circuit Resistance Low (2)
B1892 Air Bag Tone Warning Indicator Circuit Short To Ground Or Open (2)
B1891 Air Bag Tone Warning Indicator Circuit Short To Voltage (2)
B1869 Air Bag Indicator Inoperative (2)
B1870 Air Bag Indicator Short To Voltage (2)
(1) DTCs are listed in order of importance. Repair DTCs in order listed.
(2) Repair supplemental restraint system as necessary. See appropriate AIR BAG RESTRAINT ARTICLE in RESTRAINT.
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