Ford OBD/OBD2 Codes

2 Digit Codes

11

12

  Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too low) – ISC

13 

 (O)

ISC did not respond properly (extends to touch throttle then retracts for KOEO) – ISC

(R)

Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too high)

(M)

ISC sticking, open ITS circuit or TP sticking

14 

Ignition pickup (PIP) was erratic – Ignition Systems

E4OD Transmission diesel RPM sensor – Diesel RPM sensor

15 

(O)

No Keep Alive Memory power to PCM pin 1 or bad PCM (Memory Test Failure)

(M)

KAM (pin 1) was interrupted (was battery disconnected ?)

16 

1 9L & 2 5L – Throttle stop set too high – IDLE or Idle Set Procedures

2 3L – RPM’s too low – IDLE

(O)

Electronic ignition – IDM circuit fault – Ignition Systems

17

1 9L & 2 5L – Throttle stop set too low – IDLE

18 

(R)

Check base timing & advance function – Timing Tests

(M)

Spark Angle Word (SAW) circuit failure (1 9L SFI)

19 

(O)

No Vehicle Power (pins 37 + 57) or bad PCM VPWR Diagnosis

(R)

Erratic idle during test (reset throttle & retest) – Idle Set Procedures

Electronic ignition Cylinder ID sensor/circuit problem – Ignition Systems

21

Engine Coolant Temperature (ECT) sensor out of range – ECT

22

MAP (vacuum) or BARO signal out of range – MAP

23

Throttle sensor out of range or throttle set too high – TPS

24 

Intake Air Temperature (IAT) or Vane Air Temperature (VAT) sensor out of range – IAT VAT

25

Knock sensor not tested (ignore if not pinging) – KS

26

Mass Air Flow (MAF) or Vane Air Flow (VAF) out of range – MAF VAF

Transmission Oil Temperature (TOT) sensor out of range, Transmissions

27

Vehicle Speed Sensor problem – VSS

28

Vane Air Temperature (VAT) sensor out of range – VAT

2 3L w/Electronic Ignition – Cyl ID, IDM low or right coil pack failure – Ignition Systems

29

Vehicle Speed Sensor problem – VSS

31

(O,R,M)

EVP – EVP signal is/was out of range – EVP

(O,R,M)

EVR – EVP signal is/was low – EVR

(O,R,M)

PFE – PFE signal is/was low – PFE

32

(R)

EVP – EGR not responding properly during test – EVP

(O,R,M)

EVR – EVP signal is/was low – EVR

(R,M)

PFE – PFE shows low pressure, EGR not seating or memory, not   seating   intermittently – PFE

33 

(O,M)

ALL – EGR did not open/ respond during test or if memory code, did not open intermittently – EVP EVR PFE

34

(R)

  EVP – EGR did not respond properly during test – EVP

(O,R,M)

EVR – EVP sensor is/was high – EVR

(O,R,M)

PFE – PFE sensor is/was out of range – PFE

35

(R)

EVP – Engine RPM’s too low to test EGR system – EVP

(O,R,M)

EVR – EVP sensor signal is/was high – EVR

(O,R,M)

PFE – PFE sensor signal is/was high – PFE

38

Idle Tracking Switch signal was intermittent – ISC

39 

Transmission Torque Converter clutch not engaging – Transmissions

41  

  (R)

System lean – Fuel control

  (M)

System was lean for 15 seconds or more (no HO2S switching) – Fuel control

42  

(R)

System rich – Fuel control

(M)

System was rich for 15 seconds or more (no HO2S switching) – Fuel control

43 

  (R)

HO2S sensor not reading (run at 2000 rpm’s for 2 minutes and retest – check  for HO2S switching)

   (M)

Was lean at WOT for 3 seconds or more – Fuel control

44 

AIR system inoperative – Air Injection

45 

AIR not Diverting (AIRD) – Air Injection

Electronic Ignition – coil primary circuit failure – Ignition Systems

46

AIR Bypass (AIRB) not working – Air Injection

Electronic Ignition – primary circuit failure coil 2 – Ignition Systems

47 

Low flow unmetered air (check for small vacuum leaks, injector o’rings, gaskets etc )

E4OD transmission 4×4 switch/circuit problem – Transmissions

48 

High flow unmetered air (check for large vacuum leak, inlet hoses etc )

Electronic Ignition – coil primary circuit failure – Ignition Systems

49

Electronic Ignition – spout signal circuit problem – Ignition Systems

Transmission 1/2 shift problem – Transmissions

51

Engine Coolant Temperature (ECT) sensor signal is/was too high – ECT

52 

Power Steering Pressure Switch/circuit open – PSP

  (R)

Did you turn wheel during test ?

53 

Throttle Position sensor too high – TPS

54

Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal high – IAT VAT

55 

No or low (under 7 5 V) Key Power to PCM pin 5

56 

Vane Air Flow (VAF) or Mass Air Flow (MAF) sensor high – VAF MAF

Transmission Oil Temperature sensor too high – Transmissions

57

Intermittent in Park/Neutral/ Switch or Neutral Pressure switch circuit – PNP or Transmissions

58

Idle Tracking Switch (ITS) signal problem ISC

Vane Air Temperature (VAT) sensor out of range or open – VAT

59 

AXOD 4/3 circuit fault – Transmissions

3 0L SHO – Low speed fuel pump circuit problem – Power / Fuel Pump Circuits

Transmission 2/3 shift problem – Transmissions

61

Engine Coolant Temperature (ECT) sensor is or was too low – ECT

62

AXOD (KOEO only) 3/2 circuit short to ground – Transmissions

AXOD (KOEO AND KOER) 4/3 circuit failure – Transmissions

   E4OD excessive converter clutch slippage – Transmissions

63

Throttle Position Sensor (TPS) signal too low TPS

64

Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal low or grounded – IAT VAT

65 

Check intermittent HO2S (signal or ground) – Fuel Control

   (R)

E4OD truck – cycle OD cancel switch after engine ID is received – Transmissions

1984 3 8L ONLY – O, M Battery voltage high (check for electrical system overcharging)

66

  Transmission Oil Temperature (TOT) signal low (possibly grounded) – Transmissions

67 

  Park/Neutral circuit fault – PNP

  Transmission Manual Lever Position (MLP) sensor circuit – Transmissions

(M)

Intermittent Park Neutral Position (PNP) sensor fault – PNP

68

Idle Tracking Switch (ITS) circuit (possibly grounded) – ISC

Vane Air Temperature (VAT) sensor out of range or grounded – VAT

  3 8L AXOD -Transmission Temperature Switch (TTS) open – Transmissions

  Electronic Transmission – Transmission Oil Temperature (TOT) sensor was overheated -Transmissions

69 

AXOD transmission (O) 3/2 switch closed (possible short circuit) – Transmissions

AXOD (M) 3/2 switch open (poss short to power) – Transmissions

  E4OD 3/4 shift problem – Transmissions

70 

   (M)

3 8L AXOD – Data link to instrument cluster fault Service any other EEC codes, erase memory and retest   If code is still present refer to instrument cluster diagnosis manual

71  

   (M)

1 9L TBI, 2 3L TBI, 2 5L TBI – ITS signal was grounded when throttle should have been opening  ITS-ISC ISC motor problem or Idle Tracking Switch (ITS) signal wire shorted to  ground – ISC

  (M)

1 9L MFI – PCM re-initialized  Possible electrical noise, case ground or intermittent  VPWR problem – VPWR Diagnosis

  (M)

3 8L AXOD – Data link to instrument cluster fault – See code 70

72 

  (R)

No MAP or MAF change in “goose” test – retest, check for frequency or   voltage change – MAP MAF

(M)

1 9L MFI – VPWR circuit to PCM was intermittent – VPWR Diagnosis

(M)

2 3L T/C – PCM re-initialized  Possible electrical noise, case ground or  intermittent VPWR problem – VPWR Diagnosis

(M)

3 8L AXOD – Message center data link circuit fault – See code 70

73  

(O)

Rerun test, if 73 is still output replace TPS

(R)

No Throttle Position Sensor (TPS) change in “goose” test  Must get at least 25% throttle rotation – TPS

74

Was brake depressed after engine ID was received ?

Brake On Off (BOO) signal open or short to ground – BOO

75

Brake On Off (BOO) signal shorted to power – BOO

76

Vane Air Flow (VAF) did not respond to “goose” test – VAF

77

System did not receive “goose” test – see TESTS

78 

  (M)

VPWR circuit to PCM was intermittent or the PCM is bad VPWR Diagnosis

79 

A/C is on or pin 10 is shorted to power

81

Boost control solenoid – Solenoids

AIRD solenoid – Solenoids and Air Injection

3 0L SHO – Inlet Air Solenoid – Solenoids

82

2 3L TC – Fan Control wire shorted to ground – A/C and Fan Circuits

AIRB solenoid – Solenoids and Air Injection

3 8L SC – Super Charger Bypass Solenoid – Solenoids

83

High Electro Drive Fan circuit fault – A/C and Fan Circuits

  EGR Control solenoid – Solenoids

3 0L SHO – Low Speed Fuel Pump Relay circuit – Power / Fuel Pump Circuits

84

EGR Vacuum Regulator – Solenoids

EGR cutoff solenoid – Solenoids

EGR Vent solenoid – Solenoids

85

2 3L T/C Automatic – 3/4-4/3 Shift solenoid – Transmissions

CANP solenoid (ALL 1989) – Solenoids

(M)

1 9L MFI – System has corrected rich condition – Fuel control

86 

2 3L or 2 9L Truck – A4LD 3/4 shift solenoid – Transmissions

  (M) 1 9L MFI – System has corrected lean condition – Fuel control

87

(O)

Fuel pump circuit fault (check inertia switch) – Power / Fuel Pump Circuits

Vehicles with 2BBL carb – Temperature Compensated Accelerator Pump  Solenoid – Solenoids (M) intermittent in fuel pump primary circuit – Power / Fuel  Pump Circuits NOTE: On some Escorts with automatic seat belts this code is normal IN MEMORY due to the wiring

88

Throttle Kicker Solenoid – Solenoids

  Variable Voltage Choke relay circuit fault – VVC

  Fan Control circuit fault – A/C and Fan Circuits

A4LD – Converter Clutch Override solenoid – Transmissions

Electronic Ignition – IDM, DPI or spout circuit fault – Ignition Systems

89

A4LD – Converter Clutch Override solenoid – Transmissions

AXOD Torque Converter Control solenoid circuit – Transmissions

Exhaust Heat Control (heat riser) solenoid circuit – Solenoids

91

System running lean – Fuel control

     Transmission SS 1 circuit/solenoid problem – Transmissions

92

(R)

System running rich – Fuel control

Transmission SS 2 circuit/solenoid problem – Transmissions

93

(O,R)

Throttle linkage binding or bad ISC motor ISC HO2S not reading Fuel control

Transmission TCC circuit/solenoid problem – Transmissions

94

AIR system inoperative – Air Injection

Transmission TCC circuit/solenoid problem – Transmissions

95

(O)

Fuel pump: open, bad ground or always on – Power / Fuel Pump Circuits

(R)

AIR not Diverting (AIRD) – Air Injection

  (M)

Possible bad fuel pump ground or open between fuel pump and pin 8 at PCM  (Fuel Pump Monitor signal) – Power / Fuel Pump Circuits

96

(O)

Fuel pump monitor circuit shows no power – Power / Fuel Pump Circuits

(R)

AIR Bypass (AIRB) not working – Air Injection

(M)

(Service 87 code first if present) Fuel pump relay or battery power feed was open – Power / Fuel Pump Circuits

97

E4OD OD cancel light circuit failure – Transmissions

98

(R)

Did not pass KOEO yet (Get 11 in KOEO first)

Transmission EPC circuit/solenoid failure – Transmissions

99

(R)

ISC needs to learn (Let idle for 2 minutes, Erase memory and retest)

Transmission EPC circuit/solenoid failure – Transmissions

3 Digit codes

111

System checks OK

112

(O,M)

Intake Air Temperature (IAT) sensor is/was low or grounded – IAT

113

(O,M)

IAT sensor is/was high or open – IAT

114

(O,R)

IAT sensor out of range – IAT

116

(O,R)

Engine Coolant (ECT) sensor out of range – ECT

117

(O,M)

ECT sensor is/was low or grounded – ECT

118

(O,M)

ECT sensor is/was high or open – ECT

121

(O,R,M)

Throttle Position (TP) sensor out of range – TPS

122

(O,M)

TP low (possibly grounded or open circuit) – TPS

123

(O,M)

TP is/was high or short to power – TPS

124

(M)

TP voltage was higher than expected – Fuel control

125

(M)

TP voltage was lower than expected – Fuel control

126

(O,R,M)

MAP or BARO sensor out of range – “>MAP

128

(M)

MAP vacuum has not been changing – check vacuum lines – “>MAP

129

(R)

No MAP or Mass Air Flow sensor change during “goose” test – MAP MAF

136

(R)

Oxygen sensor not switching/system lean Left or Front HO2S – Fuel control

137

(R)

Oxygen sensor not switching/system rich Left or Front HO2S – Fuel control

138

(R)

Fault in Cold Start Injector circuit – Fuel control

139

(M)

Oxygen sensor not switching Left or Front HO2S – Fuel control

144

(M)

Oxygen sensor not switching Single, Right or Rear HO2S – Fuel control

157

(R,M)

Mass Air Flow signal is/was low or grounded – MAF

158

(O,R,M)

MAF sensor is/was high or short to power – MAF

159

(O,R)

MAF sensor is/was out of range – MAF

167

(R)

No Throttle Position sensor change in “goose” test (must get at least 25% rotation) – TPS

171

(M)

Oxygen sensor not switching – system was at adaptive limits – Single, Right or Rear HO2S – Fuel control

172

(R,M)

Oxygen sensor not switching – system is or was lean – Single, Right or Rear HO2S – Fuel control

173

(R,M)

Oxygen sensor not switching – system is or was rich – Single, Right or Rear HO2S – Fuel control

174

(M)

Oxygen sensor was slow in switching Single, Right or Rear HO2S – Fuel control

175

(M)

Oxygen sensor not switching – system was at adaptive limits – Left or Front HO2S – Fuel control

176

(M)

Oxygen sensor not switching – system is or was lean Left or Front HO2S – Fuel control

177

(M)

Oxygen sensor not switching – system was rich Left or Front HO2S – Fuel control

178

(M)

Oxygen sensor was slow in switching Left or Front HO2S – Fuel control

179

(M)

Fuel system was rich at part throttle Single, Right or Rear HO2S – Fuel control

181

(M)

Fuel system was lean at part throttle Single, Right or Rear HO2S – Fuel control

182

(M)

Fuel system was rich at idle Single, Right or Rear HO2S – Fuel control

183

(M)

Fuel system was lean at idle Single, Right or Rear HO2S – Fuel control

184

(M)

Mass Air (MAF) output higher than expected – Fuel control

185

(M)

Mass Air (MAF) output lower than expected – Fuel control

186

(M)

Injector pulse width longer than expected or Mass Air Flow (MAF) lower than expected – Fuel control

187

Injector pulse width shorter than expected or Mass Air Flow (MAF) higher than  expected – Fuel control

188

(M)

Fuel system was rich at part throttle – Left or Front HO2S – Fuel control

189

(M)

Fuel system was lean at part throttle – Left or Front HO2S – Fuel control

191

(M)

Fuel system was rich at idle – Left or Front HO2S – Fuel control

192

(M)

Fuel system was lean at idle – Left or Front HO2S – Fuel control

193

Failure in Flexible Fuel (FF) sensor circuit – Fuel control

194

(M)

Perform cylinder balance test to check for inoperative injectors

195

(M)

Perform cylinder balance test to check for inoperative injectors

211

(M)

Ignition PIP signal was erratic or missing – Ignition Systems

212

(M)

Ignition TACH signal was erratic (module/wiring) or SPOUT circuit fault – Ignition Systems

213

(R)

Ignition SPOUT or SAW circuit open or shorted – Ignition Systems

214

(M)

Error in Cylinder ID (CID) circuit or signal – Ignition Systems

215

(M)

Primary circuit failure – ignition coil 1 – Ignition Systems

216

(M)

Primary circuit failure – ignition coil 2 – Ignition Systems

217

(M)

Primary circuit failure – ignition coil 3 – Ignition Systems

218

(M)

IDM signal open or high or left coil pack failure – Ignition Systems

219

(M)

SPOUT circuit failure, timing defaulted to 10 degrees – follow code 213 diagnosis

222

(M)

IDM open or high or right coil pack failure – Ignition Systems

223

(M)

Dual Plug (DPI), SPOUT or IDM circuit fault – Ignition Systems

224

(M)

Failure in ignition coil primary circuit – Ignition Systems

225

(R)

Knock sensor not tested (ignore if not pinging) – KS

226

(O)

Ignition Diagnostic Monitor (IDM) signal fault – Ignition Systems

232

(M)

EI primary coil circuit failure – Ignition Systems

238

(M)

EI primary circuit failure – ignition coil 4 – Ignition Systems

311

(R)

AIR system not working – Single, Right or Rear HO2S – Air Injection

312

(R)

AIR not diverting – Air Injection

313

(R)

AIR not bypassing – Air Injection

314

(R)

AIR inoperative, Left or Front HO2S – Air Injection

326

(R,M)

Pressure Feedback EGR shows low pressure EGR not seating or not seating intermittantly – PFE

327

(O,R,M)

EGR feedback signal is/was low – EVR or PFE

328

(O,R,M)

EGR Valve Position (EVP) is/was low – EVR

332

(R,M)

EGR did not open/respond during test or if memory code, did not open intermittantly – EVR or PFE

334

(O,R,M)

EVP sensor is/was high – EVR

335

(O)

EGR feedback signal is/was out of range – EVR or PFE

336

(O,R,M)

PFE sensor signal is/was was high – “>PFE

337

(O,R,M)

EGR feedback signal is/was was high – EVR

338

(M)

Cooling system did not heat up (check cooling system / thermostat operation)

339

(M)

Cooling system overheated (check cooling system / thermostat operation)

341

(O)

Octane jumper installed (information only code to notify you if it is installed)

411

(R)

Idle speed system not controlling idle properly (generally idle too high) – ISC

412

(R)

Idle speed system not controlling idle properly (generally idle too low) – ISC

452

(M)

Vehicle Speed Sensor (VSS) problem

511

(O)

No power to PCM pin 1 or bad PCM (processor)

512

(M)

Memory power (PCM pin 1) was interrupted – Was battery disconnected ?

513

(O)

Replace processor (PCM) (internal failure)

519

(O)

PSP switch/circuit open – PSP h Pedal Position (CPP) circuit fault – PNP

528

(M)

System shows voltage at pin 10 (is A/C on ?) or pin 30 (PNP, CPP switch) – PNP

529

(M)

Data Communications Link to processor failure Service any EEC codes, erase memory and retest  If code is still present refer to instrument cluster diagnosis manual

533

(M)

Data Communications Link to instrument cluster failure – see 529

536

(O,R,M)

Brake On Off open or shorted to ground – BOO

538

(R)

System did not receive “goose” test – TESTS

539

(O)

System shows voltage at PCM pin 10  Is A/C on ?

542

(O,M)

Fuel pump open, bad ground or always on – – Power / Fuel Pump Circuits

543

(O)

Fuel pump monitor circuit shows no power – Power / Fuel Pump Circuits

(M)

(Service 556 code first if present) Fuel pump relay or battery power feed was open – Power / Fuel Pump Circuits

551

Problem in Intake Manifold Runner Control (IMRC) solenoid/circuit – Solenoids

552

(O)

AIRB solenoid/circuit failure – Solenoids

553

(O)

AIRD solenoid/circuit failure – Solenoids

554

(O)

Fuel Press Regulator Control solenoid/circuit fault – Power / Fuel Pump Circuits

556

(O,M)

Fuel pump relay primary circuit fault – Power / Fuel Pump Circuits

557

(O,M)

Low speed pump relay primary circuit fault – Power / Fuel Pump Circuits

558

(O)

EGR vacuum regulator solenoid/circuit failure – EVR or PFE or Solenoids

559

(O)

A/C relay primary circuit fault – A/C and Fan Circuits

563

(O)

High Fan Control (HFC) circuit failure – A/C and Fan Circuits

564

(O)

Fan Control (FC) circuit failure – A/C and Fan Circuits

565

(O)

Canister Purge 1 solenoid/circuit failure – Solenoids

566

(O)

transmission 3/4 shift solenoid/circuit – Transmissions

569

(O)

Canister Purge 2 solenoid/circuit failure – Solenoids

578

(M)

A/C pressure sensor VREF short to ground – A/C and Fan Circuits

579

(M)

ACP sensor did not change with A/C on – A/C and Fan Circuits

581

(M)

Cooling fan current was excessive – A/C and Fan Circuits

582

(O)

Open cooling fan circuit – A/C and Fan Circuits

583

(M)

Fuel pump current was excessive – Power / Fuel Pump Circuits

584

(M)

Open power ground circuit – Power / Fuel Pump Circuits

585

(M)

A/C clutch current was excessive – A/C and Fan Circuits

586

(M)

Open circuit in A/C clutch – A/C and Fan Circuits

587

(O, M)

Communication problem between PCM and Variable Control Relay Module (VCRM) – Power / Fuel Pump Circuits

617

(M)

Transmission shift failure (1/2 shift) – Transmissions

618

(M)

Transmission shift failure (2/3 shift) – Transmissions

619

(M)

Transmission shift failure (3/4 shift) – Transmissions

621

(O)

Solenoid/circuit failure – shift solenoid 1 – Transmissions

622

(O)

Solenoid/circuit failure – shift solenoid 2 – Transmissions

624

(O,M)

Solenoid/circuit failure -Electronic Pressure Control (EPC) current is high – Transmissions

625

(O,M)

Solenoid/circuit failure – Electronic Pressure Control (EPC) current is low – Transmissions

626

(O)

Transmission Coast Clutch (CCS) Solenoid/circuit fault – Transmissions

627

(O)

Torque Converter Clutch circuit fault – Transmissions

628

(M)

Excessive converter clutch slippage – Transmissions

629

(O,M)

Torque Converter Clutch circuit fault – Transmissions

631

(O)

Overdrive Cancel Light circuit problem – Transmissions

632

(R)

E4OD – Transmission Control Switch (TCS) should be cycled once between engine ID and  Goose test

633

(O)

4x4L switch should be in 4×2 or 4×4 high for the test

634

(O,M)

Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault  Electronic shift transmission – Manual Lever Position (MLP) sensor out of range in Park-Transmissions

636

(O,R)

Transmission Oil Temperature (TOT) sensor out of range – Transmissions

637

(O,M)

TOT sensor is/was high or open – Transmissions

638

(O,M)

TOT sensor is/was low or grounded – Transmissions

639

(R,M)

Transmission Speed sensor (TSS) circuit fault – Transmissions

641

(O)

Transmission solenoid/circuit failure Shift Solenoid 3 – Transmissions

643

(O,M)

Torque Converter Clutch (TCC) circuit – Transmissions

645

(M)

Transmission 1st gear failure – Transmissions

646

(M)

Transmission 2nd gear failure – Transmissions

647

(M)

Transmission 3rd gear failure – Transmissions

648

(M)

Transmission 4th gear failure – Transmissions

649

(M)

Transmission EPC system failure – Transmissions

651

(M)

Transmission EPC solenoid/circuit fault – Transmissions

652

(O)

Torque Converter Clutch (TCC) circuit fault – Transmissions

654

(O)

Transmission selector not in PARK – Transmissions

656

(M)

Torque Converter Clutch (TCC) slip – Transmissions

657

(M)

Transmission temperature was excessive – Transmissions