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Diagnostic Trouble Code Definitions

NOTE: For Powertrain Control Module (PCM) DTC identification and repair, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
RESTRAINTS CONTROL MODULE DTC INDEX

DTC Description Perform Test
B1231 ECS Crash Data Memory Full (1)
B1318 Low Battery Voltage (2)
B1342 ECU Defective (3)
B1869 Air Bag Indicator Inoperative (1)
B1870 Air Bag Indicator Shorted To Voltage (1)
B1871 Passenger Air Bag Deactivation Switch Fault (1)
B1877 Driver Pretensioner Circuit Resistance High (1)
B1878 Driver Pretensioner Circuit Shorted To Voltage (1)
B1879 Driver Pretensioner Circuit Shorted To Ground (1)
B1881 Passenger Pretensioner Circuit Resistance High (1)
B1882 Passenger Pretensioner Circuit Shorted To Voltage (1)
B1883 Passenger Pretensioner Circuit Shorted To Ground (1)
B1884 Passenger Air Bag Deactivation Switch Warning Light Inoperative (1)
B1885 Driver Pretensioner Circuit Resistance Low (1)
B1886 Seatbelt Passenger Pretensioner Circuit Resistance Low (1)
B1887 Driver Air Bag Circuit Short To Ground (1)
B1888 Passenger Air Bag Circuit Short To Ground (1)
B1889 Passenger Air Bag Deactivate Module Sensor Obstructed (1)
B1890 Passenger Air Bag Deactivation Switch Warning Light Short To Voltage (1)
B1891 Air Bag Tone Warning Indicator Circuit Short To Voltage (1)
B1892 Air Bag Tone Warning Indicator Circuit Short To Ground Or Open (1)
B1901 Air Bag Crash No. 1 Feed/Return Circuit Short To Ground (1)
B1916 Driver Air Bag Circuit Short To Voltage (1)
B1921 ECS Bracket High Resistance/Incorrect Mounting (1)
B1925 Passenger Air Bag Circuit Short To Voltage (1)
B1932 Driver Air Bag Resistance High (1)
B1933 Passenger Air Bag Resistance High (1)
B1934 Driver Air Bag Circuit Resistance Low (1)
B1935 Passenger Air Bag Circuit Resistance Low (1)
B1941 Air Bag Crash No. 1 Feed/Return Circuit Open (1)
B1992 Driver Side, Side Mount Air Bag Circuit Short To Voltage (1)
B1993 Driver Side, Side Mount Air Bag Circuit Short To Ground (1)
B1994 Driver Side, Side Mount Air Bag Circuit Open (1)
B1995 Driver Side, Side Mount Air Bag Circuit Resistance Low On Squib (1)
B1996 Passenger Side, Side Mount Air Bag Circuit Short To Voltage (1)
B1997 Passenger Side, Side Mount Air Bag Circuit Short To Ground (1)
B1998 Passenger Side, Side Mount Air Bag Circuit Open (1)
B1999 Passenger Side, Side Mount Air Bag Circuit Resistance Low On Squib (1)
B2432 Driver Seat Belt Buckle Switch Circuit Open (1)
B2434 Driver Seat Belt Buckle Switch Circuit Short To Ground (1)
B2435 Driver Seat Belt Buckle Switch Circuit Resistance Out Of Range (1)
B2436 Passenger Seat Belt Buckle Switch Circuit Open (1)
B2438 Passenger Seat Belt Buckle Switch Circuit Short To Ground (1)
B2439 Passenger Seat Belt Buckle Switch Circuit Resistance Out Of Range (1)
B2440 Passenger Side, Side Crash Sensor Mount Fault (1)
B2441 Driver Side, Side Crash Sensor Mount Fault (1)
B2444 Driver Side Crash Sensor Internal Fault (1)
B2445 Passenger Side Crash Sensor Internal Fault (1)
B2477 Module Configuration Error (4)
C1414 Incorrect Module Design Level (1)
U2017 Driver Side Crash Sensor Communications Fault N 
U2018 Passenger Side Crash Sensor Communications Fault N 
(1) Repair supplemental restraint system concern. See DIAGNOSIS & TESTING AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS.
(2) Repair charging system concern. See appropriate GENERATORS & REGULATORS article in ELECTRICAL.
(3) Using NGS tester, clear DTCs. Retrieve DTCs. If B1342 is retrieved again, replace RCM. See RESTRAINTS CONTROL MODULE (RCM) under REMOVAL & INSTALLATION in AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS.
(4) Check module for correct configuration. If module configuration is incorrect, reconfigure module. See PROGRAMMING . If module configuration is correct, replace DSM. See DRIVER'S SEAT MODULE under REMOVAL & INSTALLATION in POWER & HEATED SEATS article.
ANTI-LOCK BRAKE CONTROL MODULE DTC INDEX

DTC Description Perform Test
B1342 ECU Defective (1)
B1485 Brake Pedal Position Switch Circuit Failure (2)
B1676 Battery Voltage Out Of Range (3)
B2477 Module Configuration Failure (4)
C1095/C1096 Pump Motor (2)
C1113/C1115 Internal Power Relay (2)
C1145 Right Front Wheel Speed Sensor (Electrical/Static) (2)
C1148/C1234 Right Front Wheel Speed Sensor (Dynamic) (2)
C1155 Left Front Wheel Speed Sensor (Electrical/Static) (2)
C1158/C1233 Left Front Wheel Speed Sensor (Dynamic) (2)
C1169 Excessive Dump Time (2)
C1184 ABS System Time-Out (2)
C1185 Open Internal Power Relay (2)
C1194/C1196 Left Front Dump Valve (2)
C1198/C1200 Left Front Isolation Valve (2)
C1202/C1204 Rear Dump Valve (2)
C1206/C1208 Rear Isolation Valve (2)
C1210/C1212 Right Front Dump Valve (2)
C1214/C1216 Right Front Isolation Valve (2)
C1222 Wheel Speed Error (Dynamic) (2)
C1226 Brake Warning Light Output Short To Ground (2)
C1229/C1237 Rear Wheel Speed Sensor (Dynamic) (2)
C1230 Rear Wheel Speed Sensor (Electrical/Static) (2)
C1503 Right Front Isolation Diode (2)
C1504 Left Front Isolation Diode (2)
(1) Using NGS tester, clear DTCs. Retrieve DTCs. If B1342 is retrieved again, replace ABS module. See ABS CONTROL MODULE under REMOVAL & INSTALLATION in appropriate ANTI-LOCK article in BRAKES.
(2) See appropriate ANTI-LOCK article in BRAKES.
(3) Repair charging system concern. See appropriate GENERATORS & REGULATORS article in ELECTRICAL.
(4) Check module for correct configuration. If module configuration is incorrect, reconfigure module. See PROGRAMMING . If module configuration is correct, replace ABS control module. See ABS CONTROL MODULE under REMOVAL & INSTALLATION in appropriate ANTI-LOCK article in BRAKES.
OVERHEAD TRIP COMPUTER DTC INDEX

DTC Description Perform Test
B1201 Fuel Level Sensor Circuit Open Or Short To Ground (1)
B1203 Fuel Level Sensor Circuit Short To Power (1)
B1208 Message Center MODE Or E/M Button Stuck Closed (2)
B1255 A/C Ambient Temperature Sensor Open Circuit (3)
B1342 ECU Defective (4)
B2148 Pulse Width Modulated Signal Open Or Short To Ground (1)
B2477 Message Center Module Configuration Failure (5)
C1123 Vehicle Speed Signal Short To Power (1)
C1147 Vehicle Speed Sensor Input Short To Ground (1)
P0500 Vehicle Speed Signal Input Malfunction (1)
U2015 Powertrain Control Module (PCM) Signal Open Or Short To Power (1)
U2016 PCM Short To Ground (1)
(1) Repair OTC system concern. See appropriate OVERHEAD CONSOLES article.
(2) Check for proper assembly of outer/inner message center console.
(3) Repair climate control system concern. See appropriate AUTOMATIC A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING.
(4) Using NGS tester, clear DTCs. Retrieve DTCs. If B1342 is retrieved again, replace OTC module. See OVERHEAD TRIP COMPUTER under REMOVAL & INSTALLATION in appropriate OVERHEAD CONSOLES article.
(5) Check module for correct configuration. If module configuration is incorrect, reconfigure module. See PROGRAMMING . If module configuration is correct, replace OTC module. See OVERHEAD TRIP COMPUTER under REMOVAL & INSTALLATION in appropriate OVERHEAD CONSOLES article.
PAM DTC INDEX

DTC Description Perform Test
B1299 Power Supply Sensor Circuit Short To Ground (1)
B1342 ECU Defective (2)
B2373 LED No. 1 Circuit Short To Voltage (1)
B2477 Module Configuration Error (1)
C1699 Left Rear Sensor Circuit Short To Voltage (1)
C1700 Left Rear Sensor Circuit Failure (1)
C1701 Left Rear Sensor Circuit Fault (1)
C1702 Right Rear Sensor Circuit Short To Voltage (1)
C1703 Right Rear Sensor Circuit Failure (1)
C1704 Right Rear Sensor Circuit Fault (1)
C1705 Left Center Sensor Circuit Short To Voltage (1)
C1706 Left Rear Center Sensor Circuit Failure (1)
C1707 Left Rear Sensor Circuit Fault (1)
C1708 Right Rear Center Sensor Circuit Short To Voltage (1)
C1709 Right Rear Center Sensor Circuit Failure (1)
C1710 Right Rear Sensor Circuit Sensor Fault (1)
C1742 Rear Sounder Circuit Failure (1)
C1743 Rear Sounder Circuit Short To Voltage (1)
C1748 Switch Input Circuit Short To Ground (1)
C1920 LED No. 1 Circuit Failure (1)
(1) Repair parking aid system. See appropriate PARKING AID SYSTEMS article.
(2) Using NGS tester, clear DTCs. Retrieve DTCs. If B1342 is retrieved again, replace PAM. See PARKING AID MODULE (PAM) under REMOVAL & INSTALLATION in appropriate PARKING AID SYSTEMS article.
PATS MODULE DTC INDEX (EXCURSION)

DTC Description Perform Test
B1213 Anti-Theft Number Of Programmed Keys Below Minimum (1)
B1232 Antenna Not Connected Defective Transceiver (1)
B1600 No Key Code Received - Damaged Or Non-PATS Key Used (1)
B1601 Unprogrammed Key Used (1)
B1602 Invalid Key Code Format From Encoded Ignition Key (1)
B1681 PATS Transceiver Signal Is Not Received (Damaged Or Not Connected) (1)
B2103 Antenna Not Connected Defective Transceiver (1)
B2139 PCM ID Does Not Match Between PATS & PCM (1)
B2141 No Security ID Exchange Between PATS & PCM (1)
U1147 Faulty SCP Link Or Incorrect PCM Calibration (1)
U1262 Missing SCP Message O 
(1) Repair PATS system. See PASSIVE ANTI-THEFT SYSTEMS - EXCURSION article.
INSTRUMENT CLUSTER DTC INDEX

DTC Description Perform Test
B1201 Fuel Sender Circuit Failure (1)
B1204 Fuel Sender Circuit Short To Ground (1)
B1205 EIC Switch-1 Assembly Failure (1)
B1317 Battery Voltage High (2)
B1318 Battery Voltage Low (2)
B1320 Driver Door Ajar Circuit Open (1)
B1328 Passenger Door Ajar Circuit Open (1)
B1342 ECU Is Defective (3)
B1345 Heated Backlight Input Short To Ground (4)
B1352 Ignition Key-In Circuit Failure (1)
B1360 Ignition Run/Acc Circuit Open (1)
B2143 NVM Memory Failure (1)
B2477 Module Communication Error (5)
B2658 Wait To Start Warning Indicator Circuit Open (1)
C1284 Oil Pressure Switch Failure (1)
P1139 Water In Fuel Warning Indicator Circuit Malfunction (1)
U1027 Invalid Or Missing Data For Engine RPM (1)
U1051 Invalid Or Missing Data For Brakes (1)
U1058 SCP Network Missing Data For Transmission Fluid Temperature (1)
U1059 SCP Network Missing Data For PRNDL (1)
U1073 Invalid Or Missing Data For Engine Coolant (1)
(1) Repair instrument cluster concern. See ANALOG INSTRUMENT PANELS - EXCURSION & F250-F550 PICKUP article.
(2) Repair charging system concern. See appropriate GENERATORS & REGULATORS article in ELECTRICAL.
(3) Using NGS tester, clear DTCs. Retrieve DTCs. If B1342 is retrieved again, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS - EXCURSION & F250-F550 PICKUP article.
(4) Repair heated glass concern. See appropriate POWER MIRRORS article.
(5) Check Hybrid Electronic Cluster (HEC) for correct configuration. If configuration is incorrect, reconfigure. See PROGRAMMING .
EATC MODULE DTC INDEX

DTC Description Perform Test
B1251 A/C In-Car Temperature Sensor Open Circuit (1)
B1253 A/C In-Car Temperature Short To Ground (1)
B1255 A/C Ambient Temperature Sensor Open Circuit (1)
B1257 A/C Ambient Temperature Sensor Short To Ground (1)
B1259 A/C Solar Radiation Sensor Circuit Open (1)
B1261 A/C Solar Radiation Sensor Circuit Short To Ground (1)
B1342 ECU Is Defective (2)
B1676 Supply Voltage Out Of Range (3)
B2266 Blend Door Failure Or Short (1)
U1073 SCP Invalid Or Missing Data For Engine Coolant (4)
U1341 SCP Invalid Data For Vehicle Speed (4)
(1) Repair A/C system. See AUTOMATIC A/C-HEATER SYSTEMS - EXCURSION & F250-F550 PICKUPS article in HVAC.
(2) Using NGS tester, clear DTCs. Retrieve DTCs. If B1342 is retrieved again, replace EATC module. See CONTROL PANEL under REMOVAL & INSTALLATION in AUTOMATIC A/C-HEATER SYSTEMS - EXCURSION & F250-F550 PICKUPS article in HVAC.
(3) Repair charging system concern. See appropriate GENERATORS & REGULATORS article in ELECTRICAL.
(4) See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE for diagnostic information.
DSM DTC INDEX

DTC Description Perform Test
B1342 ECU Is Defective (1)
B1529 Memory Set Switch Circuit Short To Ground (2)
B1534 Memory 1 Switch Circuit Short To Ground (2)
B1538 Memory 2 Switch Circuit Short To Ground (2)
B1663 Seat Driver Front Up/Down Motor Stalled (2)
B1664 Seat Driver Rear Up/Down Motor Stalled (2)
B1665 Seat Driver Forward/Backward Motor Stalled (2)
B1666 Seat Recline Forward/Rearward Motor Stalled (2)
B1676 Battery Voltage Out Of Range (3)
B1703 Driver Seat Recline Forward Switch Circuit Short To Voltage (2)
B1707 Driver Seat Recline Rearward Switch Circuit Short To Voltage (2)
B1711 Seat Driver Front Up Switch Circuit Short To Voltage (2)
B1715 Seat Driver Front Down Switch Circuit Short To Voltage (2)
B1719 Seat Driver Forward Switch Circuit Short To Voltage (2)
B1723 Seat Driver Rearward Switch Circuit Short To Voltage (2)
B1727 Seat Driver Rear Up Switch Circuit Short To Voltage (2)
B1731 Seat Driver Rear Down Switch Circuit Short To Voltage (2)
B1950 Seat Rear Up/Down Feedback Potentiometer Circuit Failure (2)
B1952 Seat Rear Up/Down Feedback Potentiometer Short To Voltage (2)
B1954 Seat Front Up/Down Feedback Potentiometer Circuit Failure (2)
B1956 Seat Up/Down Feedback Potentiometer Circuit Short To Voltage (2)
B1958 Seat Recline Forward/Backward Feedback Potentiometer Circuit Failure (2)
B1961 Seat Recline Forward/Backward Feedback Potentiometer Circuit Short To Ground (2)
B1962 Seat Horizontal Fwd/Rwd Feedback Potentiometer Circuit Failure (2)
B1964 Seat Horizontal Fwd/Rwd Feedback Potentiometer Circuit Short To Voltage (2)
B1987 Pedal Forward/Rearward Motor Stalled (2)
B1988 Pedal Position Forward Switch Circuit Short To Voltage (2)
B1989 Pedal Position Rearward Switch Circuit Short To Voltage (2)
B1990 Pedal Forward/Rearward Feedback Potentiometer Circuit Failure (2)
B1991 Pedal Forward/Rearward Feedback Potentiometer Circuit Short To Voltage (2)
B2477 Module Configuration Error (4)
(1) Using NGS tester, clear DTCs. Retrieve DTCs. If B1342 is retrieved again, replace DSM. See DRIVER'S SEAT MODULE under REMOVAL & INSTALLATION in POWER & HEATED SEATS article.
(2) Repair system concern. See POWER & HEATED SEATS article.
(3) Repair charging system concern. See appropriate GENERATORS & REGULATORS article in ELECTRICAL.
(4) Check module for correct configuration. If module configuration is incorrect, reconfigure module. See PROGRAMMING . If module configuration is correct, replace DSM. See DRIVER'S SEAT MODULE under REMOVAL & INSTALLATION in POWER & HEATED SEATS article.
VSM DTC INDEX

DTC Description Perform Test
B1217 Horn Relay Coil Circuit Failure (1)
B1300 Power Door Lock Circuit Failure (2)
B1311 Power Door Unlock Circuit Failure (2)
B1317 Battery Voltage High (3)
B1318 Battery Voltage Low (3)
B1321 Driver Door Ajar Circuit Short To Voltage (2)
B1329 Passenger Door Ajar Circuit Short To Voltage (2)
B1333 Decklid Ajar Rear Door Circuit Short To Voltage (2)
B1337 Door Ajar RR Circuit Short To Voltage (2)
B1342 ECU Is Defective (4)
B1500 Lamp Turn Signal Left Circuit Open & Short To Voltage (5)
B1501 Lamp Turn Signal Left Circuit Short To Voltage (5)
B1504 Lamp Turn Signal Right Circuit Open & Short To Voltage (5)
B1505 Lamp Turn Signal Right Circuit Short To Voltage (5)
B1521 Hood Switch Circuit Short To Voltage (5)
B1573 Door Ajar LR Circuit Short To Voltage (2)
B1695 Autolamp On Circuit Failure (2)
B1792 Autolamp Sensor Input Circuit Short To Voltage & Open (2)
B1793 Autolamp Sensor Input Circuit Short To Ground (2)
B2112 Door Driver Set Switch Failure (2)
B2116 Door Driver Reset Switch Failure (2)
B2177 IS Sense Circuit Failure (2)
B2276 Less Than Two Transmitters Programmed (2)
B2425 Remote Keyless Entry Out Of Synchronization (2)
B2476 Radio Sense Input Circuit Failure (2)
B2477 Module Configuration Error (6)
B2661 Parklamp Relay Output Short To Voltage (5)
B2662 Parklamp Relay Output Open Circuit (5)
B2663 Headlamp Relay Output Short To Battery (5)
B2664 Headlamp Relay Output Open Circuit Or Short To Voltage (5)
B2666 Liftgate Release Switch Circuit Failure (2)
B2667 Liftglass Release Switch Circuit Failure (2)
B2669 Liftgate Release Relay Coil Failure (2)
B2675 Keypad B Switch Circuit Failure (2)
B2676 Keypad C Switch Circuit Failure (2)
B2695 Keypad A Switch Circuit Failure (2)
B2794 Third Row Power Folding Seat Circuit Failure (7)
U1950 UBP Communication Bus Fault P 
U2306 UBP Invalid Data From Node ID $60 (IC) P 
(1) Repair horn system. See STEERING COLUMN SWITCHES - EXCURSION & F250-F550 PICKUP article.
(2) Repair keyless entry system. See REMOTE KEYLESS ENTRY SYSTEMS - EXCURSION & F250-F550 PICKUP article.
(3) Repair charging system concern. See appropriate GENERATORS & REGULATORS article in ELECTRICAL.
(4) Using NGS tester, clear DTCs. Retrieve DTCs. If B1342 is retrieved again, replace VSM. See VEHICLE SECURITY MODULE under REMOVAL & INSTALLATION in REMOTE KEYLESS ENTRY SYSTEMS - EXCURSION & F250-F550 PICKUP article.
(5) Repair exterior lights concern. See EXTERIOR LIGHTS in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
(6) Check module for correct configuration. If module configuration is incorrect, reconfigure module. See PROGRAMMING . If module configuration is correct, replace VSM. See VEHICLE SECURITY MODULE under REMOVAL & INSTALLATION in REMOTE KEYLESS ENTRY SYSTEMS - EXCURSION & F250-F550 PICKUP article.
(7) Repair system concern. See POWER & HEATED SEATS article.
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