Diagnostic Trouble Code Definitions

AIR SUSPENSION CONTROL MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC

Description

Perform Test

B1318

Battery Voltage Low

⁽¹⁾

B1342

ECU Defective

⁽¹⁾

B1485

Brake Pedal Position Switch Input Short To Power

⁽¹⁾

B1565

Door Ajar Input Short To Power

⁽¹⁾

C1439

Acceleration Input Signal Circuit Failure

⁽¹⁾

C1724

Height Sensor Power Circuit Failure

⁽¹⁾

C1726

Rear Pneumatic Failure

⁽¹⁾

C1760

Rear Height Sensor Circuit Failure

⁽¹⁾

C1770

Vent Solenoid Circuit Failure

⁽¹⁾

C1830

Air Compressor Relay Circuit Failure

⁽¹⁾

C1865

Rear Fill Solenoid Circuit Failure

⁽¹⁾

C1869

Rear Gate Solenoid

⁽¹⁾

⁽¹⁾	Repair electronic suspension as necessary. See appropriate ELECTRONIC article in SUSPENSION.

DRIVER'S SEAT MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC

Description

Perform Test

B1342

ECU Defective

⁽¹⁾

B1529

Memory Set Switch Circuit Short To Power

⁽²⁾

B1533

Memory 1 Switch Circuit Short To Power

⁽²⁾

B1537

Memory 2 Switch Circuit Short To Power

⁽²⁾

B1663

Seat Front Up/Down Motor Stalled

⁽²⁾

B1664

Seat Rear Up/Down Motor Stalled

⁽²⁾

B1665

Seat Horizontal Motor Stalled

⁽²⁾

B1676

Battery Voltage Out Of Range

⁽³⁾

B1711

Seat Front Up Circuit Short To Power

⁽²⁾

B1715

Seat Down Circuit Short To Power

⁽²⁾

B1719

Seat Forward Circuit Short To Power

⁽²⁾

B1723

Seat Rearward Circuit Short To Power

⁽²⁾

B1727

Seat Rear Up Circuit Short To Power

⁽²⁾

B1731

Seat Rear Down Circuit Short To Power

⁽²⁾

B1950

Seat Rear Up/Down Feedback Circuit Failure

⁽²⁾

B1952

Seat Rear Up/Down Feedback Circuit Short To Power

⁽²⁾

B1954

Seat Front Up/Down Feedback Circuit Failure

⁽²⁾

B1956

Seat Front Up/Down Feedback Circuit Short To Power

⁽²⁾

B1962

Seat Horizontal Feedback Circuit Failure

⁽²⁾

B1964

Seat Horizontal Feedback Circuit Short To Power

⁽²⁾

⁽¹⁾	Replace Driver Seat Module. Recheck system operation.

⁽²⁾	Repair power seat system as necessary. See POWER SEATS - EXPLORER & MOUNTAINEER article.

⁽³⁾	Check charging system and repair as necessary. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair wiring as necessary. See POWER DISTRIBUTION article in WIRING DIAGRAMS.

ELECTRONIC AUTOMATIC TEMPERATURE CONTROL MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC

Description

Perform Test

B1249

Blend Door Actuator Short/Failure

⁽¹⁾

B1251

In-Car Temperature Sensor Open

⁽¹⁾

B1253

In-Car Temperature Sensor Short To Ground

⁽¹⁾

B1255

Ambient Air Temperature Sensor Open

⁽¹⁾

B1257

Ambient Air Temperature Sensor Short

⁽¹⁾

B1261

Sunload Temperature Sensor Short

⁽¹⁾

U1073

Engine Coolant Temperature Signal

⁽²⁾

U1341

Vehicle Speed Sensor

⁽³⁾

⁽¹⁾	Repair A/C system as necessary. See AUTOMATIC A/C-HEATER SYSTEMS - EXPLORER & MOUNTAINEER article in A/C HEATER SYSTEMS.

⁽²⁾	Repair engine coolant temperature sensor circuit. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.

⁽³⁾	Repair vehicle speed sensor circuit concern. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.TEST DP: VEHICLE SPEED SENSOR (VSS)/TRANSFER CASE SPEED SENSOR (TCSS) under SYSTEM TESTS in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.

GENERIC ELECTRONIC MODULE/CENTRAL TIMER MODULE DIAGNOSTIC TROUBLE CODE INDEX ⁽¹⁾

DTC

Description

Go To

B1302 ⁽²⁾

Accessory Delay Relay Coil Circuit Failure

⁽³⁾

B1304 ⁽²⁾

Accessory Delay Relay Coil Circuit Short To Power

⁽³⁾

B1313

Battery Saver Relay Coil Circuit Failure

⁽³⁾

B1315

Battery Saver Relay Coil Circuit Short To Power

⁽³⁾

B1317

Battery Voltage High

⁽⁴⁾

B1318

Battery Voltage Low

⁽⁴⁾

B1322

Driver's Door Ajar Circuit Short To Ground

⁽⁵⁾

B1323

Door Ajar Light Circuit Failure

⁽⁶⁾

B1325

Door Ajar Light Circuit Short To Power

⁽⁶⁾

B1330

Right Front Door Ajar Circuit Short To Ground

⁽⁵⁾

B1334

Deck Lid Ajar Circuit Short To Ground

⁽⁵⁾

B1338

Right Rear Door Ajar Circuit Short To Ground

⁽⁵⁾

B1340

Chime Input Request Circuit Short To Ground

⁽⁷⁾

B1342

ECU Defective

⁽⁸⁾

B1345 ⁽²⁾

Heated Backlight Input Circuit Short To Ground

⁽⁹⁾

B1347 ⁽²⁾

Heated Backlight Relay Circuit Failure

⁽⁹⁾

B1349 ⁽²⁾

Heated Backlight Relay Circuit Short To Power

⁽⁹⁾

B1352

Ignition Key-In Circuit Failure

⁽⁷⁾

B1355

Ignition RUN Circuit Failure

⁽¹⁰⁾

B1359

Ignition RUN/ACC Circuit Failure

⁽¹⁰⁾

B1371

Illuminated Entry Relay Circuit Failure

⁽⁵⁾

B1373

Interior Light Relay Coil Circuit Short To Power

⁽⁵⁾

B1398 ⁽²⁾

Driver's Power Window One-Touch Down Relay Circuit Failure

⁽³⁾

B1400 ⁽²⁾

Driver's Power Window One-Touch Down Relay Coil Circuit Short To Power

⁽³⁾

B1404 ⁽²⁾

Driver's Power Window Down Circuit Open

⁽³⁾

B1405 ⁽²⁾

Driver's Door Power Window Down Circuit Short To Power

⁽³⁾

B1410 ⁽²⁾

Driver's Door Power Window Motor Circuit Failure

⁽³⁾

B1426

Seat Belt Light Circuit Short To Power

⁽⁶⁾

B1428

Seat Belt Light Output Failure

⁽⁶⁾

B1431

Wiper Brake/Run Relay Circuit Failure

⁽¹¹⁾

B1432

Wiper Brake/Run Relay Short To Power

⁽¹¹⁾

B1434

Wiper Hi/Low Speed Relay Circuit Failure

⁽¹¹⁾

B1436

Wiper Hi/Low Speed Relay Circuit Short To Power

⁽¹¹⁾

B1438

Wiper Mode Select Switch Circuit Failure

⁽¹¹⁾

B1441

Wiper Mode Select Switch Input Short To Ground

⁽¹¹⁾

B1446

Wiper Park Sense Circuit Failure

⁽¹¹⁾

B1450

Wiper/Washer Interval Delay Switch Input Circuit Failure

⁽¹¹⁾

B1453

Wiper/Washer Interval Delay Switch Input Short To Ground

⁽¹¹⁾

B1458

Wiper/Washer Pump Motor Relay Circuit Failure

⁽¹¹⁾

B1460

Wiper/Washer Pump Motor Relay Coil Short To Power

⁽¹¹⁾

B1462

Seat Belt Switch Circuit Failure

⁽⁷⁾

B1466

Wiper Hi/Low Speed Not Switching

⁽¹¹⁾

B1467

Wiper Motor Hi/Low Speed Circuit Short To Power

⁽¹¹⁾

B1473

Wiper Motor Low Speed Circuit Failure

⁽¹¹⁾

B1475

Accessory Delay Relay Contacts Short To Power

⁽³⁾

B1476

Wiper Motor High Speed Circuit Failure

⁽¹¹⁾

B1483 ⁽²⁾

Brake Pedal Input Circuit Failure

⁽¹²⁾

B1485 ⁽²⁾

Brake Pedal Input Circuit Short To Power

⁽¹²⁾

B1574

Left Rear Door Ajar Circuit Short To Ground

⁽⁵⁾

B1577

Parking Light Input Circuit Short To Power

⁽⁷⁾

B1610 ⁽²⁾

Illuminated Entry Input From RAP Module Circuit Short To Ground

⁽⁵⁾

B1611 ⁽²⁾

Rear Wiper Mode Select Switch Circuit Failure

⁽¹¹⁾

B1614 ⁽²⁾

Rear Wiper Mode Select Switch Circuit Short To Ground

⁽¹¹⁾

B1814 ⁽²⁾

Rear Wiper Motor Down Relay Circuit Failure

⁽¹¹⁾

B1816 ⁽²⁾

Rear Wiper Motor Down Relay Coil Circuit Short To Power

⁽¹¹⁾

B1818 ⁽²⁾

Rear Wiper Motor Up Relay Coil Circuit Failure

⁽¹¹⁾

B1820 ⁽²⁾

Rear Wiper Motor Up Relay Circuit Short To Power

⁽¹¹⁾

B1839 ⁽²⁾

Rear Wiper Motor Circuit Failure

⁽¹¹⁾

B1840

Front Wiper Power Circuit Failure

⁽¹¹⁾

B1894 ⁽²⁾

Rear Wiper Motor Speed Sense Circuit Failure

⁽¹¹⁾

B2105 ⁽²⁾

Throttle Position Input Signal Out Of Range - Low

⁽¹²⁾

B2106 ⁽²⁾

Throttle Position Input Signal Out Of Range - High

⁽¹²⁾

B2141

NVM Configuration Failure

⁽¹³⁾

P0500 ⁽²⁾

Vehicle Speed Signal Circuit Failure

⁽¹²⁾

P1763 ⁽²⁾

Transmission Neutral In Tow Indicator Circuit Short To Power

⁽¹⁴⁾

P1764 ⁽²⁾

Transmission Neutral In Tow Indicator Circuit Failure

⁽¹⁴⁾

P1804 ⁽²⁾

4-Wheel Drive High Indicator Circuit Failure

⁽⁶⁾

P1806 ⁽²⁾

4-Wheel Drive High Indicator Circuit Short To Power

⁽⁶⁾

P1808 ⁽²⁾

4-Wheel Drive Low Indicator Circuit Failure

⁽⁶⁾

P1810 ⁽²⁾

4-Wheel Drive Low Indicator Circuit Short To Power

⁽⁶⁾

P1812 ⁽²⁾

4-Wheel Drive Mode Select Circuit Failure

⁽¹²⁾

P1815 ⁽²⁾

4-Wheel Drive Mode Select Circuit Short To Ground

⁽¹²⁾

P1820 ⁽²⁾

Transfer Case Clockwise Shift Relay Coil Circuit Failure

⁽¹²⁾

P1822 ⁽²⁾

Transfer Case Clockwise Shift Relay Coil Short To Power

⁽¹²⁾

P1824 ⁽²⁾

4-Wheel Drive Electric Clutch Relay Circuit Failure

⁽¹²⁾

P1826 ⁽²⁾

4-Wheel Drive Low Clutch Relay Short To Power

⁽¹²⁾

P1828 ⁽²⁾

Transfer Case Counterclockwise Shift Relay Circuit Failure

⁽¹²⁾

P1830 ⁽²⁾

Transfer Case Counterclockwise Shift Relay Coil Short To Power

⁽¹²⁾

P1836 ⁽²⁾

Transfer Case Front Shaft Speed Sensor Circuit Failure

⁽¹²⁾

P1837 ⁽²⁾

Transfer Case Rear Shaft Speed Sensor Circuit Failure

⁽¹²⁾

P1838 ⁽²⁾

Transfer Case Shift Motor Circuit Failure

⁽¹²⁾

P1846 ⁽²⁾

Transfer Case Contact Plate "A" Circuit Failure

⁽¹²⁾

P1850 ⁽²⁾

Transfer Case Contact Plate "B" Circuit Failure

⁽¹²⁾

P1854 ⁽²⁾

Transfer Case Contact Plate "C" Circuit Failure

⁽¹²⁾

P1858 ⁽²⁾

Transfer Case Contact Plate "D" Circuit Failure

⁽¹²⁾

P1866 ⁽²⁾

Transfer Case System Concern

⁽¹²⁾

P1867 ⁽²⁾

Transfer Case Contact Plate General Circuit Failure

⁽¹²⁾

P1874 ⁽²⁾

Automatic Hall Effect Sensor Power Circuit Failure

⁽¹²⁾

P1875 ⁽²⁾

Automatic Hall Effect Sensor Power Circuit Short To Power

⁽¹²⁾

P1891 ⁽²⁾

Transfer Case Contact Plate Ground Return Open Circuit

⁽¹²⁾

⁽¹⁾	Vehicles equipped with 4WD and/or power windows are equipped with GEM. All other vehicles are equipped with CTM.

⁽²⁾	This code only applies to vehicles equipped with GEM.

⁽³⁾	See POWER WINDOWS - EXPLORER & MOUNTAINEER article for testing procedures.

⁽⁴⁾	Check charging system and repair as necessary. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair wiring as necessary. See POWER DISTRIBUTION article in WIRING DIAGRAMS.

⁽⁵⁾	Check wiring harness for open and/or short circuits and repair as necessary. See ILLUMINATION/INTERIOR LIGHTS article.

⁽⁶⁾	See ANALOG INSTRUMENT CLUSTER - EXPLORER & MOUNTAINEER article for testing procedures.

⁽⁷⁾	Check wiring harness for open and/or short circuits and repair as necessary. See appropriate wiring diagram in WARNING SYSTEMS article.

⁽⁸⁾	Clear DTCs. Retrieve DTCs. If DTC B1342 is retrieved, replace GEM/CTM and retest system operation.

⁽⁹⁾	See REAR WINDOW DEFOGGERS - EXPLORER & MOUNTAINEER

⁽¹⁰⁾	See STEERING COLUMN SWITCHES - EXPLORER & MOUNTAINEER article for testing procedures.

⁽¹¹⁾	See WIPER/WASHER SYSTEMS - EXPLORER & MOUNTAINEER article for testing procedures.

⁽¹²⁾	See appropriate ELECTRONIC CONTROLS article in TRANSFER CASES for testing procedures.

⁽¹³⁾	Vehicle speed calibration data is not programmed into GEM/CTM. Use NGS tester configuration card help screen to program tire size and axle ratio. Retest system operation. If DTC B2141 is still present, replace GEM/CTM and retest system operation.

⁽¹⁴⁾	Check and repair circuits between GEM harness connector C281 and neutral tow connector, located behind center of dash. See BODY CONTROL MODULES article.

PARKING AID MODULE DIAGNOSTIC TROUBLE CODE 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 Power

⁽¹⁾

B2477

Module Configuration Failure

⁽³⁾

C1699

Left Rear Sensor Circuit Short To Power

⁽¹⁾

C1700

Left Rear Sensor Circuit Failure

⁽¹⁾

C1701

Left Rear Sensor Fault

⁽¹⁾

C1702

Right Rear Sensor Circuit Short To Power

⁽¹⁾

C1703

Right Rear Sensor Circuit Failure

⁽¹⁾

C1704

Right Rear Sensor Circuit Fault

⁽¹⁾

C1705

Left Rear Center Sensor Circuit Short To Power

⁽¹⁾

C1706

Left Rear Center Sensor Circuit Failure

⁽¹⁾

C1707

Left Rear Center Sensor Fault

⁽¹⁾

C1708

Right Rear Center Sensor Circuit Short To Power

⁽¹⁾

C1709

Right Rear Center Sensor Circuit Failure

⁽¹⁾

C1710

Right Rear Center Sensor Circuit Fault

⁽¹⁾

C1742

Rear Sounder Circuit Failure

⁽¹⁾

C1743

Rear Sounder Circuit Short To Power

⁽¹⁾

C1748

Switch Input Circuit Short To Ground

⁽¹⁾

C1920

LED No. 1 Circuit Failure

⁽¹⁾

⁽¹⁾	See PARKING AID SYSTEMS - EXPLORER & MOUNTAINEER article for testing procedure.

⁽²⁾	Using NGS tester, retrieve and document all continuous DTCs. Clear DTCs. Perform parking aid module self-test. If DTC B1342 is retrieved again, replace parking aid module.

⁽³⁾	Using NGS tester, configure parking aid module module. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.

PASSIVE ANTI-THEFT SYSTEM MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC

Description

Perform Test

B1213

Number Of Programmed PATS Keys Below Minimum

⁽¹⁾

B1232

Antenna Not Connected Or Defective Transceiver

⁽¹⁾

B1600

No Key Code Received

⁽¹⁾

B1601

Unprogrammed PATS Key

⁽¹⁾

B1602

Invalid PATS Key Code Format Read

⁽¹⁾

B1681

PATS Transceiver Signal Not Received

⁽¹⁾

B2103

Antenna Not Connected Or Defective Transceiver

⁽¹⁾

B2139

PCM ID Does Not Match Between PATS Module & PCM

⁽¹⁾

B2141

No Security Identification Exchange Between PATS Module & PCM

⁽¹⁾

U1147

Faulty SCP Link Or Incorrect PCM Calibration

⁽¹⁾

U1262

Missing SCP Message

⁽²⁾

⁽¹⁾	See PASSIVE ANTI-THEFT SYSTEMS - EXPLORER & MOUNTAINEER article for testing procedures.

⁽²⁾	See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.

REMOTE ANTI-THEFT PERSONALITY MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC

Description

Perform Test

B1309

Power Door Lock Circuit Short To Ground

⁽¹⁾

B1341

Power Door Unlock Circuit Short To Ground

⁽¹⁾

B1485

Brake Pedal Input Circuit Short To Power

⁽¹⁾

B1522

Hood Switch Circuit Short To Ground

⁽²⁾

B1526

Keypad Switch Circuit Short To Ground

⁽¹⁾

B1562

Door Lock Cylinder Circuit Short To Ground

⁽²⁾

B1629

PRNDL Reverse Input Short To Power

⁽¹⁾

B1845

Anti-Theft Ignition Lock Switch Failure

⁽³⁾

B2425

Keyless Entry Out Of Synchronization

⁽¹⁾

⁽¹⁾	See REMOTE KEYLESS ENTRY SYSTEMS - EXPLORER & MOUNTAINEER article for testing procedures.

⁽²⁾	See ACTIVE ANTI-THEFT SYSTEMS - EXPLORER & MOUNTAINEER article for testing procedures.

⁽³⁾	Disregard DTC B1845. This is an invalid DTC.

RESTRAINT CONTROL MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC

Description

Perform Test

B1231

RCM Crash Data Memory Full

⁽¹⁾

B1342

ECU Defective

⁽¹⁾

B1869

Air Bag Indicator Inoperative

⁽¹⁾

B1870

Air Bag Indicator Short To Power

⁽¹⁾

B1887

Driver's Side Air Bag Circuit Short To Ground

⁽¹⁾

B1888

Passenger's Side Air Bag Circuit Bag Short To Ground

⁽¹⁾

B1891

Air Bar Tone Warning Indicator Circuit Short To Power

⁽¹⁾

B1892

Air Bag Tone Warning Indicator Circuit Short To Ground Or Open

⁽¹⁾

B1916

Driver's Side Air Bag Circuit Short To Power

⁽¹⁾

B1921

RCM Bracket Ground Resistance High

⁽¹⁾

B1925

Passenger's Side Air Bag Circuit Short To Power

⁽¹⁾

B1932

Driver's Side Air Bag Circuit Resistance High

⁽¹⁾

B1933

Passenger's Side Air Bag Circuit Resistance High

⁽¹⁾

B1934

Driver's Side Air Bag Circuit Resistance Low

⁽¹⁾

B1935

Passenger's Side Air Bag Circuit Resistance Low

⁽¹⁾

B1901

Front External Crash Sensor Short To Ground

⁽¹⁾

B1941

Front External Crash Sensor Open Or Short To Power

⁽¹⁾

B1992

Driver's Side Air Bag Circuit Short To Power

⁽¹⁾

B1993

Driver's Side Air Bag Circuit Short To Ground

⁽¹⁾

B1994

Driver's Side Air Bag Circuit High Resistance

⁽¹⁾

B1995

Driver's Side Air Bag Circuit Low Resistance

⁽¹⁾

B1996

Passenger's Side Air Bag Circuit Short To Power

⁽¹⁾

B1997

Passenger's Side Air Bag Circuit Short To Ground

⁽¹⁾

B1998

Passenger's Side Air Bag Circuit High Resistance

⁽¹⁾

B1999

Passenger's Side Air Bag Circuit Low Resistance

⁽¹⁾

B2440

Passenger's Side Crash Sensor Mounting Failure

⁽¹⁾

B2441

Driver's Side Crash Sensor Mounting Failure

⁽¹⁾

B2444

Driver's Side Crash Sensor Internal Fault

⁽¹⁾

B2445

Passenger's Side Crash Sensor Internal Fault

⁽¹⁾

C1414

Incorrect Vehicle Identification Code

⁽¹⁾

U2017

Driver's Side Crash Sensor Communication Fault

⁽¹⁾

U2018

Passenger's Side Crash Sensor Communication Fault

⁽¹⁾

⁽¹⁾	Repair supplemental restraint system as necessary. See DIAGNOSIS & TESTING article in appropriate lemon-25® AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.

4-WHEEL ANTI-LOCK BRAKE SYSTEM MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC

Description

Perform Test

B1342

ECU Defective

⁽¹⁾

B1485

Brake Pedal Position Switch Circuit Failure

⁽²⁾

B1676

Battery Voltage Out Of Range

⁽³⁾

B2141

Vehicle Speed Calibration Data Not Programmed Into Module

⁽⁴⁾

C1095

Hydraulic Pump Motor Circuit Failure

⁽³⁾

C1102

G-Switch Circuit Failure

⁽³⁾

C1145

Right Front ABS Sensor Circuit Failure

⁽³⁾

C1155

Left Front ABS Sensor Circuit Failure

⁽³⁾

C1230

Rear ABS Sensor Circuit Failure

⁽³⁾

C1233

Left Front ABS Sensor Output Failure

⁽³⁾

C1234

Right Front ABS Sensor Output Failure

⁽³⁾

C1237

Rear ABS Sensor Output Failure

⁽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⁾	Disregard DTC B1485. DTC B1485 applies only to traction control vehicle.

⁽³⁾	Repair Anti-Lock Brake System (ABS). See appropriate ANTI-LOCK article in BRAKES.

⁽⁴⁾	Using NGS tester, perform calibration procedure. Repeat self-test.