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Ford Resources

Ford Fuel Injection

Self-Test Codes

#

When 2-digit Code Definitions

KOEO

CM

KOER

NC

X

X

X

No Codes

11

X

X

X

System pass

12

 

 

X

Cannot control RPM during ER Self-Test high RPM check

13

 

 

X

Cannot control RPM during ER Self-Test low RPM check

14

 

X

 

Two or more successive erratic Profile Ignition Pickup (PIP) pulses occurred, resulting in a possible engine miss or stall.

15

X

 

 

EEC permanent Read Only Memory (ROM) test failed

 

X

 

EEC battery powered Keep Alive Memory (KAM) test failed

16

X

 

 

IDM signal not received

 

 

X

RPM too low to perform HEGO test

17

 

 

X

RPM below Self-Test limit with Idle Air Control off

18

 

 

X

SPOUT circuit open or spark angle word failure

 

X

 

IDM circuit failure or SPOUT circuit grounded

19

X

 

 

Failure in EEC internal voltage

 

 

X

RPM erratic, dropped too low during test

 

X

 

Cylinder Identification CID circuit failure

21

X

 

X

ECT out of self test range 0.3 to 3.7 volts.

22

X

X

X

MAP/BP sensor out of self test range 1.4 to 1.6 volts.

23

X

 

X

Closed throttle TPS voltage higher or lower than expected.

24

X

 

X

ACT sensor out of self test range 0.3 to 3.7 volts.

25

 

 

X

Knock not sensed during dynamic test

26

X

 

 

MAF sensor was greater than 0.7 volts with engine off.

 

 

X

MAF sensor was not between 0.2 and 1.5 volts with engine running.

X

 

X

TOT sensor out of self test range

28

X

 

X

VAT sensor out of self test range

 

X

 

Loss of IDM, right side

29

 

X

 

Insufficient input from vehicle speed sensor

31

X

 

X

PFE or EVP circuit below minimum voltage of 0.24 volts

 

X

 

PFE or EVP circuit has intermittently failed below minimum voltage of 0.24 volts

32

X

 

X

EVP circuit below minimum voltage of 0.24 volts

 

X

 

EVP circuit has intermittently failed below minimum voltage of 0.24 volts

33

 

X

X

EGR valve opening not detected

34

X

 

X

PFE or EVP circuit above the closed limit of 0.67 volts

 

X

 

PFE or EVP circuit has intermittently failed above the closed limit of 0.67 volts

35

 X

 

X

PFE or EVP circuit above the maximum limit of 4.81 volts

 

X

 

PFE or EVP circuit has intermittently failed above the maximum limit of 4.81 volts

39

 

X

 

AXOD converter bypass clutch not applying properly

41

 

 

X

HEGO sensor circuit indicates system lean (right side)

 

X

 

No HEGO switching detected always lean (right side)

42

 

 

X

HEGO sensor circuit indicates system rich (right side)

 

X

 

No HEGO switching detected always rich (right side)

43

 

X

 

HEGO lean at WOT

44

 

X

X

Thermactor Air Injection system inoperative. (Right side)

45

 

 

X

Thermactor secondary air is misdirected

 

X

 

DIS coil pack 3 circuit failure or coil 1 primary circuit failure

46

 

 

X

Thermactor air not bypassed during self test

 

X

 

DIS coil pack 1 circuit failure or coil 2 primary circuit failure

47

X

 

 

4WD switch closed (E4OD)

 

 

X

Measured air flow too low at base idle

48

 

 

X

Measured air flow too high at base idle

 

X

 

Loss of IDM, left side

49

 

X

 

SPOUT signal default to 10 BTDC

 

X

 

1 - 2 shift error (E4OD)

51

X

X

 

ECT sensor signal is greater than the Self-Test maximum of 4.6 volts.

52

X

X

X

Power steering pressure switch always open or closed

53

X

 

 

TP circuit above maximum 4.5 volts.

 

X

 

TPS circuit has intermittently failed above maximum 4.5 volts.

54

X

X

 

ACT sensor signal is greater than the Self-Test maximum of 4.6 volts.

55

 

 

X

Key power input to processor is open

56

X

X

 

MAF circuit above maximum voltage of 4.5volts.

X

X

 

TOT sensor output is greater than Self-Test maximum value of 4.8 volts.

57

X

 

 

Octane adjust service pin in use / circuit grounded

 

X

 

AXOD Neutral pressure switch circuit failed open

58

X

X

 

VAT indicated -40F / circuit open

59

X

X

 

2 - 3 shift error (E4OD)

X

X

 

Low speed fuel pump circuit failure

61

X

X

 

ECT sensor signal is less than the Self-Test minimum of 0.2 volts.

62

X

 

 

4/3 or 3/2 pressure switch circuit failed open

 

X

 

Converter clutch error (E4OD)

63

X

TPS circuit below minimum 0.6 volts.

 

X

 

TPS circuit has intermittently failed below minimum 0.6 volts.

64

 

 

X

ACT sensor signal is less than the Self-Test minimum of 0.2 volts.

65

 

 

X

Overdrive cancel switch open, no change seen (E4OD)

 

X

 

Never went to closed loop fuel

66

 

X

 

MAF sensor went below 0.4 volts during the last 80 warm-up cycles.

 

X

X

TOT sensor output was less than Self-Test minimum value of 0.15 volts.

67

X

X

 

Neutral safety circuit failure.

 

 

X

A/C circuit was on during self test.

X

X

 

MLP sensor out of range (E4OD)

68

 

X

 

Transmission Oil Temperature Switch failed open

69

 

X

 

3 4 shift error

70

 

X

 

EEC data transmission circuit failed

71

 

X

 

Software re-initialization detected or Cluster Control Assembly circuit failed

72

 

 

X

Insufficient MAF/MAP change during Dynamic Response Test.

 

X

 

Power interruption detected or Message Center Control Assembly circuit failed

73

 

 

X

TPS did not exceed 25% rotation during the Dynamic Response Test.

74

 

 

X

Brake On/Off switch not actuated during the Dynamic Response Test.

75

 

 

X

Brake On/Off switch failure always ON

76

 

 

X

Insufficient VAT change during Dynamic Response Test

77

 

 

X

Brief WOT not sensed during self-test / Operator error

79

X

 

 

A/C or defrost on during self test

81

X

 

 

Air management 2 circuit failure (AM2/TAD)

 

X

 

MAP sensor vacuum was not greater than 2 in-Hg (7 kPa) during normal vehicle operation.

82

X

 

 

Air management 1 circuit failure (AM1/TAB)

83

X

 

 

EGR Control solenoid circuit failure

X

 

 

High speed electro-drive fan circuit failure

X

X

 

Low speed fuel pump relay circuit open

84

X

 

X

EGR vacuum solenoid circuit failure

85

X

 

X

Canister purge solenoid circuit failure

86

 

X

 

Adaptive fuel limit reached

X

 

 

3 – 4 Shift solenoid circuit failure

87

X

 

 

Fuel pump primary circuit failure when the PCM commanded the fuel pump on, voltage was not detected on FPM.

 

X

 

Fuel pump primary circuit failure EEC to ground (Relay Resistance)

88

X

 

 

Electro-drive fan circuit failure

 

X

 

Loss of dual plug input control

89

X

 

 

Converter clutch solenoid circuit failure

91

X

 

 

Shift solenoid 1 circuit failure (E4OD)

 

X

 

No HEGO switching detected always lean (left side)

 

 

X

HEGO sensor circuit indicates system lean (left side)

92

X

 

 

Shift solenoid 2 circuit failure (E4OD)

 

X

 

No HEGO switching detected always rich (left side)

 

 

X

HEGO sensor circuit indicates system rich (left side)

93

X

 

 

Coast clutch solenoid circuit failure (E4OD)

94

X

 

 

Converter clutch solenoid circuit failure (E4OD)

 

 

X

Thermactor Air Injection system inoperative. (Left side)

95

X

X

 

Fuel pump secondary circuit failure when the PCM commanded the fuel pump on, voltage was not detected on FPM.

96

X

X

 

Fuel pump secondary circuit failure battery to EEC (Inertia switch)

97

X

 

 

Overdrive cancel indicator light circuit failure (E4OD)

98

X

 

 

Electronic pressure control driver open in EEC (E4OD)

 

 

X

Hard fault present

99

X

X

 

Electronic pressure control circuit failure (E4OD)

 

 

X

EEC system hasn’t learned to control idle

NC

X

X

X

No Codes

 

KOEO = Key On Engine Off

 

CM = Continues Memory

 

KOER = Key On Engine Running

 

#

When 3-Digit Code Definitions

KOEO

CM

KOER

NC

X

X

X

No Codes

111

X

X

X

System pass

112

X

 

 

ACT sensor signal is less than the Self-Test minimum of 0.2 volts.

 

X

 

ACT circuit has intermittently failed below minimum 0.2 volts.

113

X

 

 

ACT sensor signal is greater than the Self-Test maximum of 4.6 volts.

 

X

 

ACT circuit has intermittently failed above the maximum of 4.6 volts.

114

X

 

X

ACT out of self test range 0.3 to 3.7 volts.

116

X

 

X

ECT out of self test range 0.3 to 3.7 volts.

117

X

 

 

ECT sensor signal is less than the Self-Test minimum of 0.2 volts.

 

X

 

ECT circuit has intermittently failed below minimum 0.2 volts.

118

X

 

 

ECT sensor signal is greater than the Self-Test maximum of 4.6 volts.

 

X

 

ECT circuit has intermittently failed above the maximum of 4.6 volts.

121

X

 

X

Closed throttle TPS voltage higher or lower than expected.

 

X

 

TP sensor was inconsistent with the MAF/MAP value in the last 80 drive cycles.

122

X

 

 

TPS circuit below minimum 0.6 volts.

 

X

 

TPS circuit has intermittently failed below minimum 0.6 volts.

123

X

 

 

TP circuit above maximum 4.5 volts.

 

X

 

TPS circuit has intermittently failed above maximum 4.5 volts.

124

 

X

 

TP sensor was higher than expected with the MAF/MAP value in the last 80 drive cycles.

125

 

X

 

TP sensor was lower than expected with the MAF/MAP value in the last 80 drive cycles.

126

 X

X

X

MAP/BP sensor out of self test range 1.4 to 1.6 volts.

128

 

X

 

MAP sensor vacuum was not greater than 2 in-Hg (7 kPa) during normal vehicle operation.

129

 

 

X

Insufficient MAF/MAP change during Dynamic Response Test.

136

 

 

X

HEGO sensor circuit indicates system lean (left side)

137

 

 

X

HEGO sensor circuit indicates system rich (left side)

139

 

X

 

No HEGO sensor switching detected or disconnected (left side)

141

 

X

 

HEGO sensor circuit indicates system lean (both sides)

144

 

X

 

No HEGO sensor switching detected or disconnected (right side)

157

 

X

 

MAF sensor went below 0.4 volts during the last 80 warm-up cycles.

158

X

X

 

MAF sensor went above 4.5 volts during the last 80 warm-up cycles.

159

X

 

 

MAF signal was greater than 0.70 volt during KOEO.

 

 

X

MAF signal was not between 0.20 and 1.50 volts during KOER.

167

 

 

X

TPS did not exceed 25% rotation during the Dynamic Response Test.

171

 

X

 

Fuel system at adaptive limit, HEGO unable to switch (right side)

172

 

 

X

HEGO sensor circuit indicates system lean (right side)

173

 

 

X

HEGO sensor circuit indicates system rich (right side)

174

 

X

 

HEGO switching time is slow

175

 

X

 

Fuel system at adaptive limit, HEGO unable to switch (left side)

176

 

X

 

HEGO sensor circuit indicates system lean (left side)

177

 

X

 

HEGO sensor circuit indicates system rich (left side)

178

 

X

 

HEGO switching time is slow.

179

 

X

 

Right side still rich, at leanest adaptive limit, during part throttle.

181

 

X

 

Right side still lean, at richest adaptive limit, during part throttle.

182

 

X

 

Right side still rich, at leanest adaptive limit, at idle.

183

 

X

 

Right side still lean, at richest adaptive limit, at idle.

184

 

X

 

MAF higher than expected

185

 

X

 

MAF lower than expected

186

 

X

 

Injector pulse width longer than expected

187

 

X

 

Injector pulse width shorter than expected

188

 

X

 

Left side still rich, at leanest adaptive limit, during part throttle.

189

 

X

 

Left side still lean, at richest adaptive limit, during part throttle.

191

 

X

 

Left side still rich, at leanest adaptive limit, at idle.

192

 

X

 

Left side still lean, at richest adaptive limit, at idle.

193

X

    Flexible Fuel sensor circuit failure.

194

 

X

  Run cylinder balance diagnostic test.

195

X

Run cylinder balance diagnostic test.

211

 

X

 

Two or more successive erratic Profile Ignition Pickup (PIP) pulses occurred, resulting in a possible engine miss or stall.

212

 

X

 

Loss of IDM input to EEC or SPOUT circuit grounded.

213

 

 

X

SPOUT circuit open

214

 

X

 

Cylinder Identification (CID) circuit failure

215

 

X

 

EEC detected coil 1 primary circuit failure

216

 

X

 

EEC detected coil 2 primary circuit failure

217

 

X

 

EEC detected coil 3 primary circuit failure

218

 

X

 

Loss of IDM signal (left side)

219

 

X

 

SPOUT failure, spark timing has defaulted to 10 degrees BTDC.

222

 

X

 

Loss of IDM signal (right side)

223

 

X

 

Loss of Dual Plug Inhibit control

224

 

X

 

Erratic IDM input to processor

225

 

 

X

Knock Sensor (KS) signal not sensed during dynamic response test.

226

X

 

 

IDM signal not received

244

   

X

Camshaft Position (CMP) Sensor failure.

311

 

 

X

Thermactor air system inoperative  (right side)

312

 

 

X

Thermactor air misdirected upstream during self test.

313

 

 

X

Thermactor air not bypassed during self test.

314

 

 

X

Thermactor air system inoperative  (left side)

326

 

X

X

PFE or DPFE circuit voltage lower than expected with zero EVR duty cycle.

327

X

X

X

DPFE or EVP circuit below minimum voltage of 0.2 volts.

328

X

X

X

EVP circuit below minimum voltage of 0.24 volts.

332

 

X

X

EGR valve opening not detected.

334

X

X

X

DPFE or EVP circuit above the closed limit of 0.67 volts.

335

X

 

 

PFE or DPFE sensor voltage out of Self-Test range.

336

 

X

X

EVP or DPFE circuit voltage above maximum voltage with zero EVR duty cycle.

337

X

X

X

DPFE or EVP circuit above the maximum limit of 4.81 volts.

338

 

X

 

ECT lower than expected.

339

 

X

 

ECT higher than expected.

341

X

 

 

Octane Adjust shorting bar is not in or the OCT ADJ circuit is open.

381

 

X

  Frequent A/C compressor clutch (ACCS) cycling less than 8.5 seconds.

411

 

 

X

Cannot control rpm during KOER low RPM check

412

 

 

X

Cannot control rpm during KOER high RPM check

452

 

X

 

Computer detected an error in the VSS or PSOM signal during the last 80 warm-up cycles.

461

 

X

  Engine over speed was detected

511

X

X

X

EEC permanent Read Only Memory (ROM) test failed.

512

 

X

 

EEC battery powered Keep Alive Memory (KAM) test failed.

513

 

X

 

Failure in EEC processor internal voltage.

519

X

 

 

Power steering pressure switch circuit open.

521

 

 

X

Power steering pressure switch did not change state during KOER test.

522

X

 

 

Vehicle not in PARK or NEUTRAL during KOEO

524

X

X

 

When the PCM commanded the fuel pump on, voltage was not detected on FPM.

525

X

X

 

Vehicle in gear or A/C on during Self-Test

526

X

 

 

Neutral Pressure Switch closed or A/C on

527

X

 

 

Neutral Drive Switch open or A/C on

528

 

X

 

Clutch Switch Circuit failure

529

 

X

 

Data Communications Link or Electronic Instrument Cluster circuit failure.

532

 

X

 

Data Communications Link or Electronic Instrument Cluster circuit failure.

533

 

X

 

Data Communications Link or Electronic Instrument Cluster circuit failure.

536

 

X

X

Brake On/Off circuit failure / switch not actuated during KOER test

538

 

 

X

Insufficient RPM change during KOER dynamic response test / Operator error

539

X

 

 

A/C or Defroster ON during KOEO test

542

X

X

 

Fuel pump circuit failure

543

X

X

 

When the PCM commanded the fuel pump on, voltage was not detected on FPM.

551

X

 

 

Intake Manifold Runner Control (IMRC) circuit failure

552

X

 

 

Air management 1 circuit failure (AM1/TAB)

553

X

 

 

Air management 2 circuit failure (AM1/TAD)

554

X

 

 

Fuel Pressure Regulator Control (FPRC) solenoid circuit failure

556

X

X

 

Fuel Pump circuit failure

557

X

X

 

Fuel pump relay coil resistance failure

558

X

 

 

EGR Vacuum Regulator circuit failure

559

X

 

 

Air Conditioning On relay circuit failure

563

X

 

 

High Speed Electro-Drive Fan circuit failure

564

X

 

 

Electro-Drive Fan circuit failure

565

X

 

 

Canister purge circuit failure

566

X

 

 

3 – 4 Shift Solenoid failure

569

X

 

 

Canister purge 2 circuit failure

571

X

 

 

EGR Atmospheric Regulator circuit failure.

572

X

 

 

EGR Vacuum Regulator circuit failure.

578

 

X

 

A/C Pressure (ACP) sensor VREF circuit is short to ground.

579

 

X

 

A/C Pressure (ACP) sensor circuit is above maximum voltage.

581

 

X

 

When the cooling fan was activated, the circuit exceeded current draw.

582

X

 

 

Open or short to power in the power-to-cooling fan circuit.

583

 

X

 

When the fuel pump was activated, the power-to-pump circuit exceeded the normal current draw.

584

 

X

 

Variable Control Relay Module circuit grounded.

585

 

X

 

A/C clutch circuit exceeded the normal current draw.

586

 

X

 

A/C clutch circuit open or shorted to power

587

X

X

 

Data Communications Link (DCL) error

593

X

X

 

Oxygen Sensor Heater circuit failure

617

 

X

 

1 - 2 shift error (E4OD)

618

 

X

 

2 - 3 shift error (E4OD)

619

 

X

 

3 - 4 shift error (E4OD)

621

X

 

 

Shift solenoid #1 circuit failure

622

X

 

 

Shift solenoid #2 circuit failure

623

X

 

 

624

X

X

 

Electronic Pressure Control solenoid or driver circuit failure

625

X

X

 

Electronic Pressure Control driver open in EEC

626

X

 

 

Coast clutch solenoid circuit failure (E4OD)

627

X

 

 

Converter clutch solenoid circuit failure (E4OD)

628

 

X

 

Converter clutch Lock-Up error (E4OD)

629

X

X

 

Converter clutch control circuit failure

631

X

 

 

Overdrive light circuit failure

632

 

 

X

Overdrive cancel switch not changing state (E4OD)

633

X

 

 

4WD switch is closed

634

X

 

X

Transmission Manual Lever Position Sensor circuit out of self test.

636

X

 

X

TOT sensor voltage out of self test range.

637

X

X

 

TOT sensor circuit above maximum voltage

638

X

X

 

TOT sensor circuit below minimum voltage

639

 

X

X

Insufficient input from the Transmission Speed Sensor

641

X

 

 

Shift solenoid #3 circuit failure

643

X

X

 

Converter Clutch Control circuit failure

645

 

X

 

Incorrect gear ratio obtained for first gear

646

 

X

 

Incorrect gear ratio obtained for second gear

647

 

X

 

Incorrect gear ratio obtained for third gear

648

 

X

 

Incorrect gear ratio obtained for fourth gear

649

 

X

 

Electronic Pressure Control range failure

651

 

X

 

Electronic Pressure Control circuit failure

652

X

 

 

Modulated Converter Clutch Control solenoid output circuit error

653

 

 

X

Transmission Control Switch was not cycled during KOER Self-Test.

654

X

 

 

MLP sensor not in park position

656

 

X

 

Converter Clutch Control continuous slip error detected

657

 

X

 

Transmission over temperature condition occurred.

659

 

X

 

High vehicle speed detected while the vehicle was in PARK.

667

 

X

 

Transmission Manual Lever Position Sensor circuit shorted

668

 

X

 

Transmission Manual Lever Position Sensor circuit open

675

 

X

 

MLP circuit voltage was out of the expected range.

691

 

X

 

4WD switch circuit failure.

998

 

 

 

Hard fault present

NC

X

X

X

No Codes

 

KOEO = Key On Engine Off

 

CM = Continues Memory

 

KOER = Key On Engine Running