Diagnostic Trouble Code Definitions

NOTE: Prior to performing any system test, see HOW TO USE SYSTEM TESTS under SYSTEM TESTS. If instructed to replace Powertrain Control Module (PCM) after performing a system test, new PCM must be programmed. See PROGRAMMING PCM .

If a DTC appears with an "x" in the numerator (example DTC P071x), "x" denotes any number between 0-9. If a "P" series DTC appears that is not listed in , diagnose by symptom in TROUBLE SHOOTING - NO CODES - EEC-V - GASOLINE & NGV article for symptom diagnosis. On some models, PCM is capable of storing some body DTCs. If any "B", "C" or "U" series DTCs are retrieved (example DTC B1213, C1702 or U2195), go to appropriate MODULE COMMUNICATIONS NETWORK article in ACCESSORIES & EQUIPMENT to determine test to perform.

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC ⁽¹⁾

Go To

P0102

For KOER & Continuous Memory Only, Test DC , Step 2)

P0103

For KOEO, KOER & Continuous Memory, Test DC , Step 20)

P0106

For KOEO, KOER & Continuous Memory, Test DQ , Step 1)

P0107

Ranger 2.3L

For KOEO & KOER, Test DM , Step 1)
For Continuous Memory, Test DM , Step 6)

All Others

For KOEO, KOER & Continuous Memory, Test DQ , Step 1)

P0108

Ranger 2.3L

For KOEO & KOER, Test DM , Step 1)
For Continuous Memory, Test DM , Step 6)

All Others

For KOEO, KOER & Continuous Memory, Test DQ , Step 1)

P0109

For KOEO, KOER & Continuous Memory, Test DQ , Step 1)

P0112

For KOEO & KOER, Test DA , Step 20)
For Continuous Memory, Test DA , Step 90)

P0113

For KOEO & KOER, Test DA , Step 10)
For Continuous Memory, Test DA , Step 90)

P0116 ⁽²⁾

Vehicles With Cylinder Head Temperature Sensor

For Continuous Memory Only, Test DL , Step 80)

Vehicles With Engine Coolant Temperature Sensor

For Continuous Memory Only, Test DA , Step 80)

P0117 ⁽²⁾

Vehicles With Cylinder Head Temperature Sensor

For KOEO & KOER, Test DL , Step 20)
For Continuous Memory, Test DL , Step 90)

Vehicles With Engine Coolant Temperature Sensor

For KOEO & KOER, Test DA , Step 20)
For Continuous Memory, Test DA , Step 90)

P0118 ⁽²⁾

Vehicles With Cylinder Head Temperature Sensor

For KOEO & KOER, Test DL , Step 10)
For Continuous Memory, Test DL , Step 90)

Vehicles With Engine Coolant Temperature Sensor

For KOEO & KOER, Test DA , Step 10)
For Continuous Memory, Test DA , Step 90)

P0121

For KOER & Continuous Memory Only, Test DH , Step 22)

P0122

For KOEO, KOER & Continuous Memory, Test DH , Step 11)

P0123

For KOEO, KOER & Continuous Memory, Test DH , Step 8)

P0125

Vehicles With Cylinder Head Temperature Sensor

For Continuous Memory Only, Test DL , Step 110)

Vehicles With Engine Coolant Temperature Sensor

For Continuous Memory Only, Test DA , Step 100)

P0127

Lightning 5.4L SC Only

For KOEO, KOER & Continuous Memory, Test DU , Step 30)

P0131

For Continuous Memory Only, Test H , Step 27)

P0132

For KOEO, KOER & Continuous Memory, Test H , Step 115)

P0133

For Continuous Memory Only, Test H , Step 20)

P0135

NGV Models

For KOEO, KOER & Continuous Memory, Test HA , Step 30)

All Others

For KOEO, KOER & Continuous Memory, Test H , Step 30)

P0136

For Continuous Memory Only, Test H , Step 80)

P0138

For KOEO, KOER & Continuous Memory, Test H , Step 115)

P0141

NGV Models

For KOEO, KOER & Continuous Memory, Test HA , Step 30)

All Others

For KOEO, KOER & Continuous Memory, Test H , Step 25)

P0148

For Continuous Memory Only, Test HC , Step 1)

P0151

For Continuous Memory Only, Test H , Step 27)

P0152

For KOEO, KOER & Continuous Memory, Test H , Step 115)

P0153

For Continuous Memory Only, Test H , Step 20)

P0155

NGV Models

For KOEO, KOER & Continuous Memory, Test HA , Step 30)

All Others

For KOEO, KOER & Continuous Memory, Test H , Step 30)

P0156

For Continuous Memory Only, Test H , Step 80)

P0158

For KOEO, KOER & Continuous Memory, Test H , Step 115)

P0161

NGV Models

For KOEO, KOER & Continuous Memory, Test HA , Step 30)

All Others

For KOEO, KOER & Continuous Memory, Test H , Step 25)

P0171

NGV Models

For Continuous Memory Only, Test HA , Step 41)

All Others

For Continuous Memory Only, Test H , Step 41)

P0172

NGV Models

For Continuous Memory Only, Test HA , Step 41)

All Others

For Continuous Memory Only, Test H , Step 41)

P0174

NGV Models

For Continuous Memory Only, Test HA , Step 41)

All Others

For Continuous Memory Only, Test H , Step 41)

P0175

NGV Models

For Continuous Memory Only, Test HA , Step 41)

All Others

For Continuous Memory Only, Test H , Step 41)

P0180

For KOEO & KOER, Test DB , Step 2)
For Continuous Memory, Test DB , Step 7)

P0181

For KOEO & KOER Only, Test DB , Step 1)
For Continuous Memory, Test DB , Step 7)

P0182

NGV Only

For KOEO & KOER, Test DB , Step 2)
For Continuous Memory, Test DB , Step 7)

P0183

For KOEO & KOER, Test DB , Step 2)
For Continuous Memory, Test DB , Step 7)

P0190

For KOEO & KOER, Test DD , Step 11)
For Continuous Memory, Test DD , Step 15)

P0191

For KOEO, KOER & Continuous Memory, Test DD , Step 16)

P0192

For KOEO & KOER, Test DD , Step 1)
For Continuous Memory, Test DD , Step 15)

P0193

For KOEO & KOER, Test DD , Step 7)
For Continuous Memory, Test DD , Step 15)

P0201-P0212

For KOEO, KOER & Continuous Memory, Test H , Step 56)

P0217

Lightning 5.4L SC Only

For KOEO, KOER & Continuous Memory, Test DL , Step 100)

P0218

⁽³⁾

P0230

NGV Models

For KOEO & KOER, Test KC , Step 1)
For Continuous Memory, Test KC , Step 40)

All Others

For KOEO & KOER, Test KA , Step 1)
For Continuous Memory, Test KA , Step 40)

P0231

NGV Models

For KOEO & KOER, Test KC , Step 20)
For Continuous Memory, Test KC , Step 35)

All Others

For KOEO & KOER, Test KA , Step 20)
For Continuous Memory, Test KA , Step 35)

P0232

NGV Models

For KOEO & KOER, Test KC , Step 10)
For Continuous Memory, Test KC , Step 30)

All Others

For KOEO & KOER, Test KA , Step 10)
For Continuous Memory, Test KA , Step 30)

P0234

Lightning 5.4L SC Only

For KOEO, KOER & Continuous Memory, Test KJ , Step 1)

P0243

Lightning 5.4L SC Only

For KOEO, KOER & Continuous Memory, Test KJ , Step 6)

P0298

LS Only

For Continuous Memory Only, Test DA , Step 130)

P0300-P0310

For KOER & Continuous Memory Only, Test HD , Step 1)

P0315

For Continuous Memory Only, Test HD , Step 42)

P0316

For Continuous Memory Only, Test HD , Step 1)

P0320

For KOEO & Continuous Memory Only, Test NC , Step 1)

P0325, P0326, P0330 & P0331

For KOER & Continuous Memory Only, Test DG , Step 1)

P0340

For KOER & Continuous Memory Only, Test DR , Step 1)

P0350

For KOER & Continuous Memory Only, Test JB , Step 1)

P0351-P0354

With Coil Pack

For KOER & Continuous Memory Only, Test JE , Step 1)

With Coil-On-Plug

For KOER & Continuous Memory Only, Test JF , Step 1)

P0355-P0360

For KOER & Continuous Memory Only, Test JF , Step 1)

P0400

Ranger 2.3L Only

For KOEO, KOER & Continuous Memory, Test KD , Step 9)

P0401

For Continuous Memory Only, Test HE , Step 70)

P0402

For KOER & Continuous Memory Only, Test HE , Step 20)

P0403

Ranger 2.3L Only

For KOER & Continuous Memory Only, Test KD , Step 1)

P0405

For KOEO, KOER & Continuous Memory, Test HE , Step 1)

P0411

For KOEO, KOER & Continuous Memory, Test HM , Step 7)

P0412

For KOEO, KOER & Continuous Memory, Test HM , Step 1)

P0420 & P0430

For Continuous Memory Only, Test HF , Step 1)

P0442

⁽⁴⁾

P0443

For KOEO & KOER, Test HX , Step 2)
For Continuous Memory, Test HX , Step 1)

P0451

For Continuous Memory Only, Test Z , Step 1)

P0452

For KOEO, KOER & Continuous Memory, Test HX , Step 26)

P0453

For KOEO, KOER & Continuous Memory, Test HX , Step 33)

P0455 & P0456

⁽⁴⁾

P0457

For Continuous Memory Only, Test HX , Step 43)

P0460

For KOEO, KOER & Continuous Memory, Test HX , Step 76)

P0461

For Continuous Memory Only, Test Z , Step 1)

P0480

For KOEO, KOER & Continuous Memory, Test KG , Step 1)

P0500

Cougar

For Continuous Memory Only, Test DP , Step 5)

Continental, LS, Thunderbird, Town Car & Windstar

⁽⁵⁾

Excursion & Pickup 5.4L & 6.8L Over 8500 GVW

For Continuous Memory Only, Test DF , Step 1)

Pickup Under 8500 GVW, 4WD Manual Shift-On-The-Fly

For Continuous Memory Only, Test DP , Step 30)

All Others

For Continuous Memory Only, Test DP , Step 1)

P0501

Cougar

For Continuous Memory Only, Test DP , Step 5)

Continental, LS, Thunderbird, Town Car & Windstar

⁽⁵⁾

Excursion & Pickup 5.4L & 6.8L Over 8500 GVW

For Continuous Memory Only, Test DF , Step 1)

All Others

For Continuous Memory Only, Test DP , Step 1)

P0503

For Continuous Memory Only, Test DP , Step 20)

P0505

For KOER Only, Test KE , Step 2)

P0528

For KOEO, KOER & Continuous Memory, Test KG , Step 10)

P0552 & P0553

For KOEO & KOER Only, Test DT , Step 2)
For Continuous Memory Only, Test DT , Step 10)

P0602

⁽⁶⁾

P0603

For KOEO Only, Test QB , Step 1)

P0605 & P0606

⁽⁷⁾

P0703

Continental & Town Car

For KOEO, Test FD , Step 2)
For KOER, Test FD , Step 1)

All Others

For KOEO, Test FD , Step 2)
For KOER, Test FD , Step 1)
For Continuous Memory, Test FD , Step 3)

P0704

Explorer, Explorer Sport, Explorer Sport Trac, Pickup & Ranger With M/T

For KOEO & Continuous Memory Only, Test TA , Step 1)

Escort, Focus & LS V6 With M/T

For KOEO & Continuous Memory Only, Test TA , Step 5)

P0705, P0707, P0708 Or P071x

⁽³⁾

P071x, P072x, P073x, P074x, P075x, P076x, P077x, P078x Or P079x

Models With A/T

⁽³⁾

Models With M/T

For Continuous Memory Only, Test TJ , Step 1)

P0812

For Continuous Memory Only, Test TH , Step 1)

P0813, P0815 Or P0840

⁽³⁾

P1000

⁽⁸⁾

P1001

For KOER Only, Test QA , Step 1)

P1100

For Continuous Memory Only, Test DC , Step 16)

P1101

For KOEO, Test DC , Step 3)
For KOER, Test DC , Step 1)

P1112

For Continuous Memory Only, Test DA , Step 90)

P1114

Lightning 5.4L SC Only

For KOEO, KOER & Continuous Memory, Test DU , Step 20)

P1115

Lightning 5.4L SC Only

For KOEO, KOER & Continuous Memory, Test DU , Step 10)

P1116 ⁽²⁾

Vehicles With Cylinder Head Temperature Sensor

For KOEO & KOER Only, Test DL , Step 1)

Vehicles With Engine Coolant Temperature Sensor

For KOEO & KOER Only, Test DA , Step 1)

P1117⁽²⁾

Vehicles With Cylinder Head Temperature Sensor

For Continuous Memory Only, Test DL , Step 90)

Vehicles With Engine Coolant Temperature Sensor

For Continuous Memory Only, Test DA , Step 90)

P1120

For KOEO, KOER & Continuous Memory, Test DH , Step 3)

P1121

For KOER & Continuous Memory Only, Test DH , Step 15)

P1124

For KOEO & KOER Only, Test DH , Step 1)

P1125

For Continuous Memory Only, Test DH , Step 20)

P1127

NGV Only

For KOER Only, Test HA , Step 90)

All Others

For KOER Only, Test H , Step 100)

P1128 Or P1129

NGV Only

For KOER Only, Test HA , Step 100)

All Others

For KOER Only, Test H , Step 110)

P1130

NGV Only

For Continuous Memory Only, Test HA , Step 40)

All Others

For Continuous Memory Only, Test H , Step 40)

P1131 Or P1132

NGV Only

For KOER & Continuous Memory Only, Test HA , Step 40)

All Others

For KOER & Continuous Memory Only, Test H , Step 40)

P1137 Or P1138

For KOER Only, Test H , Step 80)

P1150

NGV Only

For Continuous Memory Only, Test HA , Step 40)

All Others

For Continuous Memory Only, Test H , Step 40)

P1151

NGV Only

KOER & Continuous Memory Only, Test HA , Step 40)

All Others

KOEO, KOER & Continuous Memory, Test H , Step 40)

P1152

NGV Only

KOER & Continuous Memory Only, Test HA , Step 40)

All Others

KOER & Continuous Memory Only, Test H , Step 40)

P1157 Or P1158

For KOER Only, Test H , Step 80)

P1168 Or P1169

NGV Only

For Continuous Memory Only, Test DD , Step 16)

P1180 Or P1181

NGV Only

For Continuous Memory Only, Test HB , Step 17)

P1183

LS Only

For Continuous Memory Only, Test DA , Step 111)

P1184

LS Only

For KOEO, KOER & Continuous Memory, Test DA , Step 110)

P1229

Lightning 5.4L SC Only

For KOEO, KOER & Continuous Memory, Test KP , Step 1)

P1232

For KOEO & KOER, Test KA , Step 45)
For Continuous Memory, Test KA , Step 60)

P1233 Or P1234

LS Only

⁽⁹⁾

All Others

For KOEO, KOER & Continuous Memory, Test KB , Step 1)

P1235 Or P1236

For KOEO, KOER & Continuous Memory, Test KB , Step 30)

P1237 Or P1238

For KOEO, KOER & Continuous Memory, Test KB , Step 47)

P1244 Or P1245

For KOER & Continuous Memory Only, Test FH , Step 1)

P1246

Cougar Only

For KOER & Continuous Memory Only, Test FH , Step 1)

All Others

For KOER & Continuous Memory Only, Test HY , Step 1)

P1260

For Continuous Memory Only, Test QD , Step 1)

P1270

For Continuous Memory Only, Test ND , Step 1)

P1285

For KOEO, KOER & Continuous Memory, Test DL , Step 30)

P1288

For KOEO, KOER & Continuous Memory, Test DL , Step 1)

P1289 Or P1290

For KOEO & KOER, Test DL , Step 5)
For Continuous Memory, Test DL , Step 90)

P1299

For Continuous Memory Only, Test DL , Step 100)

P1309

Variable Reluctance Type CMP Sensor

For Continuous Memory Only, Test HD , Step 41)

P1336

Hall-Effect Type CMP Sensor

For Continuous Memory Only, Test HD , Step 40)

All Others

For Continuous Memory Only, Test JD , Step 22)

P1380

For KOEO & KOER, Test HK , Step 2)
For Continuous Memory, Test HK , Step 1)

P1381

For Continuous Memory, Test HK , Step 11)

P1383

For Continuous Memory, Test HK , Step 11)

P1400

For KOEO, KOER & Continuous Memory, Test HE , Step 1)

P1401

For KOEO, KOER & Continuous Memory, Test HE , Step 10)

P1405

For Continuous Memory Only, Test HE , Step 50)

P1406

For Continuous Memory Only, Test HE , Step 60)

P1408

All Others

For KOER Only, Test HE , Step 71)

Ranger 2.3L Only

For KOER Only, Test KD , Step 9)

P1409

For KOEO & KOER, Test HE , Step 110)
For Continuous Memory, Test HE , Step 120)

P1413

For KOEO, KOER & Continuous Memory, Test HM , Step 19)

P1414

For KOEO, KOER & Continuous Memory, Test HM , Step 27)

P1432

Ranger 2.3L Only

For KOEO, KOER & Continuous Memory, Test KQ , Step 10)

P1436

For KOEO & KOER, Test DJ , Step 5)
For Continuous Memory, Test DJ , Step 10)

P1437

For KOEO & KOER, Test DJ , Step 1)
For Continuous Memory, Test DJ , Step 10)

P1443

⁽⁴⁾

P1450

For Continuous Memory Only, Test HX , Step 18)

P1451

For KOEO, KOER & Continuous Memory, Test HX , Step 65)

P1460

Escort & Mustang

For KOEO & KOER, Test X , Step 105)
For Continuous Memory, Test X , Step 120)

All Others

For KOEO & KOER, Test KM , Step 1)
For Continuous Memory, Test KM , Step 30)

P1461

For KOEO, KOER & Continuous Memory, Test DS , Step 1)

P1462

For KOEO, KOER & Continuous Memory, Test DS , Step 10)

P1463

For Continuous Memory Only, Test DS , Step 20)

P1464

Escort & Mustang

For KOEO & KOER Only, Test X , Step 124)

All Others

For KOEO & KOER Only, Test KM , Step 19)

P1469

For Continuous Memory Only, Test X , Step 115)

P1474

LS & Thunderbird

For KOEO, KOER & Continuous Memory, Test KH , Step 1)

Escort & Mustang

For KOEO & KOER, Test X , Step 20)
For Continuous Memory, Test X , Step 30)

All Others

For KOEO & KOER, Test KF , Step 1)
For Continuous Memory, Test KF , Step 10)

P1477

For KOEO & KOER, Test KF , Step 1)
For Continuous Memory, Test KF , Step 15)

P1479

Escort & Mustang

For KOEO & KOER, Test X , Step 15)
For Continuous Memory, Test X , Step 35)

Escape

For KOEO & KOER, Test KF , Step 7)
For Continuous Memory, Test KF , Step 20)

Sable & Taurus

For KOEO & KOER, Test KF , Step 7)
For Continuous Memory, Test KF , Step 23)

All Others

For KOEO & KOER, Test KF , Step 1)
For Continuous Memory, Test KF , Step 20)

P1500

For Continuous Memory Only, Test DP , Step 25)

P1501

For KOER Only, Test DP , Step 15)

P1502

Cougar

For Continuous Memory Only, Test DP , Step 5)

Continental, LS, Thunderbird, Town Car & Windstar

⁽⁵⁾

Excursion & Pickup 5.4L & 6.8L Over 8500 GVW

For Continuous Memory Only, Test DF , Step 1)

Pickup Under 8500 GVW, 4WD Manual Shift-On-The-Fly

For Continuous Memory Only, Test DP , Step 30)

All Others

For Continuous Memory Only, Test DP , Step 1)

P1504

For KOEO, KOER & Continuous Memory, Test KE , Step 2)

P1506

For Continuous Memory Only, Test KE , Step 20)

P1507

For KOER & Continuous Memory Only, Test KE , Step 2)

P1516 Or P1517

For KOEO & Continuous Memory Only, Test HU , Step 15)

P1518-P1520, P1537 Or P1538

For KOEO, KOER & Continuous Memory, Test HU , Step 15)

P1549

For KOEO & Continuous Memory Only, Test HU , Step 65)

P1550

For KOEO Only, Test DT , Step 2)
For KOER Only, Test DT , Step 1)

P1565-P1568

⁽¹⁰⁾

P1572

For KOER & Continuous Memory Only, Test FD , Step 3)

P1605

For KOEO Only, Test QB , Step 1)

P1633

For KOEO, KOER & Continuous Memory, Test QB , Step 1)

P1635

⁽⁶⁾

P1636

All A/T Models

⁽¹¹⁾

P1639

⁽⁶⁾

P1640

Bi-Fuel Vehicles Only

⁽¹¹⁾

P1641

For KOEO, KOER & Continuous Memory, Test KB , Step 47)

P1650

For KOEO & KOER Only, Test FF , Step 1)

P1651

For Continuous Memory Only, Test FF , Step 10)

P1700-P1702

⁽³⁾

P1703

For KOEO, Test FD , Step 2)
For KOER, Test FD , Step 1)

P1704

⁽³⁾

P1705

Escort With M/T

For KOEO & KOER Only, Test TA , Step 5)

Explorer, Explorer Sport, Explorer Sport Trac, Focus, LS V6, Pickup & Ranger With M/T

For KOER Only, Test TA , Step 5)

A/T Models Only

⁽³⁾

P1709

Escort With M/T

For KOEO & KOER Only, Test TA , Step 5)

Explorer, Explorer Sport, Explorer Sport Trac, Focus, LS V6, Pickup & Ranger With M/T

For KOEO & Continuous Memory Only, Test TA , Step 1)

All Models With A/T

⁽³⁾

P171x

⁽³⁾

P1728

⁽³⁾

P1729

Test TG , Step 1)

P173x, P174x, P175x, P176x Or P177x

⁽³⁾

P1780

For KOER Only, Test TB , Step 1)

P1781

For KOEO Only, Test TG , Step 1)

P1783-P1788 Or P179x

⁽³⁾

P1789

⁽³⁾

P18xx

⁽¹²⁾

P1900

Models With A/T

⁽³⁾

Models With M/T

For Continuous Memory Only, Test TJ , Step 1)

P1901

⁽³⁾

⁽¹⁾	DTCs apply to all models, unless otherwise indicated.

⁽²⁾	Refer to WIRING DIAGRAMS article to verify if model is equipped with cylinder head or engine coolant temperature sensor.

⁽³⁾	See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

⁽⁴⁾	See EVAPORATIVE EMISSIONS DIAGNOSTIC TROUBLE CODE DEFINITIONS .

⁽⁵⁾	Vehicle speed information is provided by the anti-lock brake system. For test procedures, see appropriate ANTI-LOCK article in BRAKES.

⁽⁶⁾	Flash Vehicle Identification Block needs to be reprogrammed. See FLASH VEHICLE IDENTIFICATION BLOCK PROCEDURE under PROGRAMMING PCM.

⁽⁷⁾	Ensure aftermarket performance products are not installed before replacing PCM. Replace PCM. See PROGRAMMING PCM .

⁽⁸⁾	DTC P1000 is ignored in KOEO and KOER On-Demand Self-Test. If DTC P1000 is retrieved from Continuous Memory, go to Test QC , step 1) .

⁽⁹⁾	Perform Rear Electronics Module (REM) self-test. Go to MODULE COMMUNICATIONS NETWORK - LS article in ACCESSORIES & EQUIPMENT for complete DTC listing and test procedures.

⁽¹⁰⁾	See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT for test procedures.

⁽¹¹⁾	DTC P1636 indicates PCM has lost communication with Inductive Signature Chip (ISC). Replace PCM as necessary. See PROGRAMMING PCM .

⁽¹²⁾	DTC is transfer case related. For test procedures, see appropriate DIAGNOSIS article in TRANSFER CASES.