Self-Test Codes

 

 

#

When

2-digit Code Definitions

KOEO

KOER

CM

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

Pip circuit failure

15

X

 

 

EEC read only memory ROM test failed

 

 

X

EEC 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

22

X

X

 

MAP/BP sensor out of self test range

23

X

X

 

TP sensor out of self test range

24

X

X

 

ACT sensor out of self test range

25

 

 

 

Knock not sensed during dynamic test

26

X

X

 

VAF/MAF out of self test range

X

X

 

TOT sensor out of self test range (E4OD)

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

X

PFE or EVP circuit below minimum voltage

32

X

X

X

EVP voltage below closed limit

33

 

X

X

EGR valve opening not detected

34

X

X

X

EVP voltage above closed limit

35

 

 

X

PFE or EVP circuit above closed limit

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

 

 

X

No HEGO switching detected always rich (right side)

43

 

 

X

HEGO lean at WOT

44

 

X

 

Thermactor air system inoperative right side

45

 

 

 

Thermactor air upstream during self test

45

 

X

 

Thermactor air upstream during self test

 

 

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 reads 40°F or circuit open

52

X

X

 

Power steering pressure switch always open or closed

53

X

 

X

TP circuit above maximum voltage

54

X

 

X

ACT sensor circuit open

55

 

X

 

Key power input to processor is open

56

X

 

X

VAF or MAF circuit above maximum voltage

X

 

X

TOT reads 40°F or circuit open (E4OD)

57

X

 

 

Octane adjust service pin in use / circuit grounded

 

 

X

AXOD Neutral pressure switch circuit failed open

58

X

 

X

VAT indicated -40°F / circuit open

59

X

 

X

2 - 3 shift error (E4OD)

X

 

X

Low speed fuel pump circuit failure

61

X

 

X

ECT reads 254°F or circuit grounded

62

X

 

 

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

 

 

X

Converter clutch error (E4OD)

63

X

 

X

TPS circuit below minimum voltage

64

 

X

 

ACT sensor grounded or input reads 254°F

65

 

X

 

Overdrive cancel switch open, no change seen (E4OD)

 

 

X

Never went to closed loop fuel

66

 

X

X

MAF sensor input below minimum voltage

X

 

X

TOT grounded or reads 290°F (E4OD)

67

X

 

 

Neutral Pressure switch open

 

 

X

Clutch switch circuit failure

X

X

 

Neutral/drive switch open or A/C on

X

 

X

MLP sensor out of range or A/C on (E4OD)

68

X

 

X

VAT circuit grounded

X

X

X

Transmission Oil Temperature Switch failed open

69

X

 

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

X

 

Insufficient TP change during Dynamic Response Test

74

 

X

 

Brake On/Off switch failure or not actuated

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

82

X

 

 

Air management 1 circuit failure

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

X

X

Fuel pump primary circuit failure

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

 

HEGO sensor circuit indicates system lean (left side)

 

 

X

No HEGO switching detected (left side)

92

X

 

 

Shift solenoid 2 circuit failure (E4OD)

 

X

 

No HEGO switching detected always rich (left side)

93

X

 

 

Coast clutch solenoid circuit failure (E4OD)

94

X

 

 

Converter clutch solenoid circuit failure (E4OD)

 

X

 

Secondary Air Injection system inoperative (left side)

95

X

 

X

Fuel pump secondary circuit failure EEC to ground

96

X

 

X

Fuel pump secondary circuit failure battery to EEC

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

 

è

                KOEO = Key On Engine Off

 

è

        KOER = Key On Engine Running

 

è

CM = Continues Memory


 

#

When

3-Digit Code Definitions

KOEO

KOER

CM

111

X

X

X

System pass

112

X

 

X

ACT sensor circuit below minimum voltage, grounded, or reads 254°F

113

X

 

X

ACT sensor circuit above maximum or reads 40°F

114

X

X

 

ACT outside test limits during KOEO or KOER tests

116

X

X

 

ECT outside test limits during KOEO or KOER tests

117

X

 

X

ECT sensor circuit below minimum voltage, grounded, or reads 254°F

118

X

 

X

ECT sensor circuit above maximum or reads 40°F

121

X

X

X

Closed throttle voltage higher or tower than expected

122

X

 

X

TP sensor circuit below minimum voltage

123

X

 

X

TP sensor circuit above maximum voltage

124

 

 

X

TP sensor voltage higher than expected

125

 

 

X

TP sensor voltage lower than expected

126

 

X

X

BP or MAP sensor higher or lower than expected

128

 

X

 

MAP vacuum circuit failure

129

 

X

 

Insufficient MAF or MAP change during dynamic responded test

136

 

X

 

HEGO sensor circuit shows system always lean

137

 

X

 

HEGO sensor circuit shows system always rich

139

 

 

X

No HEGO sensor switching detected or disconnected

144

 

 

X

No HEGO sensor switching detected or disconnected

157

 

 

X

MAF sensor below minimum voltage or disconnected

158

X

 

X

MAF sensor above maximum voltage

159

X

X

 

MAF sensor higher or lower than expected during KOEO / ER

167

 

X

 

Insufficient TP change during dynamic response test

171

 

 

X

Fuel system at adaptive limit, HEGO unable to switch

172

 

X

X

HEGO shows system always lean

173

 

X

X

HEGO shows system always rich

174

 

 

X

HEGO switching time is slow

175

 

 

X

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

176

 

 

X

HEGO shows system always lean (front side)

177

 

 

X

HEGO shows system always rich (front side)

178

 

 

X

HEGO switching time is slow

179

 

 

X

Fuel at lean adaptive limit at part throttle; system rich

181

 

 

X

Fuel at rich adaptive limit at part throttle; system lean

182

 

 

X

Fuel at lean adaptive limit at idle; system rich

183

 

 

X

Fuel at rich adaptive limit at idle; system lean

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

Fuel at lean adaptive limit at part throttle; system rich

189

 

 

X

Fuel at rich adaptive limit at part throttle; system lean

191

 

 

X

Fuel at lean adaptive limit at idle; system rich

192

 

 

X

Fuel at rich adaptive limit at idle; system lean

211

 

 

X

PIP circuit fault

212

 

 

X

Loss of IDM input to EEC or SPOUT circuit grounded

213

 

X

 

SPOUT circuit open

214

 

 

X

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 disconnected, to10 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

 

Knocked not sensed during dynamic response test

226

X

 

 

IDM signal not received

311

 

X

 

Thermactor air system inoperative  (right side)

312

 

X

 

Thermactor air upstream during self test

313

 

X

 

Thermactor air not bypassed during self test

314

 

X

 

Thermactor air system inoperative  (left side)

326

 

X

X

EVP or DPFE circuit voltage lower than expected

327

X

X

X

EVP or DPFE circuit below minimum voltage

328

X

X

X

EGR valve closed voltage lower than expected

332

 

X

X

Insufficient EGR flow detected

334

X

X

X

EGR valve closed voltage higher than expected

335

X

 

 

EGR sensor voltage out of Self-Test range

336

 

X

X

EVP or DPFE circuit voltage above maximum voltage

337

X

X

X

EVP or DPFE circuit above maximum voltage

338

 

 

X

ECT lower than expected

339

 

 

X

ECT higher than expected

341

X

 

 

Octane Adjust Service Pin in use or circuit open

411

 

X

 

Cannot control rpm during KOER low RPM check

412

 

X

 

Cannot control rpm during KOER high RPM check

452

 

 

X

Insufficient input from vehicle speed sensor

511

X

 

 

EEC processor Read Only Memory (ROM) test failure

512

 

 

X

EEC processor Keep Alive Memory (KAM) test failure

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

522

X

 

 

Vehicle not in PARK or NEUTRAL during KOEO

524

X

 

X

Low speed fuel pump circuit open

525

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 EEC processor 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 secondary circuit failure: EEC to ground

543

X

 

X

Fuel pump secondary circuit failure: Battery to EEC

551

X

 

 

Idle Air Control circuit failure

552

X

 

 

Air management 1 circuit failure

553

X

 

 

Air management 2 circuit failure

554

X

 

 

Fuel Pressure Regulator Control solenoid circuit failure

556

X

 

X

Fuel pump primary circuit failure

557

X

 

X

Fuel Pump Relay primary circuit 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

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

624

X

 

X

Electronic Pressure Control solenoid or driver circuit failure

625

X

 

 

Electronic Pressure Control driver open in EEC

626

X

 

 

Coast clutch solenoid circuit failure (E4OD)

627

X

 

X

Converter clutch solenoid circuit failure (E4OD)

628

X

 

X

Converter clutch Lock-Up error (E4OD)

629

X

 

 

Converter clutch control circuit failure

631

X

 

 

Overdrive cancel indicator light circuit failure

632

 

X

 

Overdrive cancel switch not changing state (E4OD)

633

X

 

 

4WD switch is closed

634

 

 

 

Manual Lever Position sensor voltage out of self test range or A/C on

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

654

 

 

 

MLP sensor not in park position

656

 

 

 

Converter Clutch Control continuous slip error detected

998

 

 

 

Hard fault present

 

è

                KOEO = Key On Engine Off

 

è

        KOER = Key On Engine Running

 

è

CM = Continues Memory

 

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