Diagnostic Service Codes

EEC-lV System Ford Vehicles

Model Years 1984 through 1986

By Mike Fleming

Direct Links:

1984 EEC-IV Codes

1985 EEC-IV Codes

1986 EEC-IV Codes

1984 EEC-lV Service Codes:

11        SYSTEM " PASS "

12        RPM OUT OF SPEC (EXTENDED IDLE)

13        RPM OUT OF SPEC (NORMAL IDLE)

14        PIP WAS ERRATIC (CONTINUOUS TEST)

15        ROM TEST FAILED

16        RPM TOO LOW (FUEL LEAN TEST)

17        RPM TOO LOW (UPSTREAM/LEAN TEST)

18        NO TACH

21        ECT OUT OF RANGE

22        MAP OUT OF RANGE

23        TPS OUT OF RANGE

24        ACT OUT OF RANGE

25        KNOCK NOT SENSED IN TEST

26        MAP (VAF) OUT OF RANGE

31        EVP OUT OF LIMITS

32        EGR NOT CONTROLLING

33        EVP NOT CLOSING PROPERLY

34        NO EGR FLOW

35        RPM TOO LOW (EGR TEST)

36        FUEL ALWAYS LEAN (AT IDLE)

37        FUEL ALWAYS RICH (AT IDLE)

41        SYSTEM ALWAYS LEAN

42        SYSTEM ALWAYS RICH

43        EGO COOLDOWN OCCURRED

44        AIR MANAGEMENT SYSTEM INOPERATIVE

45        AIR ALWAYS UPSTREAM

46        AlR NOT ALWAYS BYPASSED

47        UP AlR/LEAN TEST ALWAYS RICH

48        INJECTORS IMBALANCED

51        ECT INPUT TOO HIGH

53        TPS INPUT TOO HIGH

54        ACT (VAT) INPUT TOO HlGH

55        ELECTRICAL CHARGING UNDER VOLTAGE

56        IDLE TRACKING SWITCH INPUT TOO HIGH (ENGINE RUNNING TEST)

61        ECT INPUT TOO LOW

63        TPS INPUT TOO LOW

64        ACT (VAT) INPUT TOO LOW

65        ELECTRICAL CHARGING OVER VOLTAGE

66        MAP (VAF) INPUT TOO LOW

67        NEUTRAL DRIVE SWITCH  = DRIVE OR ACCELERATOR = ON (ENGINE OFF)

68        ITS OPEN OR  AC ON (ENGINE OFF)

72        NO MAP CHANGE IN "GOOSE" TEST

73        NO TPS CHANGE IN "GOOSE" TEST

76        NO MAP (VAF) CHANGE IN "GOOSE" TEST

77        OPERATOR DID NOT DO "GOOSE" TEST

81        THERMACTOR AIR BYPASS (TAB) CIRCUIT FAULT

82        THERMACTOR AIR DIVERTER (TAD) CIRCUIT FAULT

83        EGR CONTROL (EGRC) CIRCUIT FAULT

84        EGR VENT (EGRV) CIRCUIT FAULT

85        CANISTER PURGE (CANP) CIRCUIT FAULT

86        WOT A/C CUTOFF CIRCUIT FAULT (ALL 3.8L AND 5.OL CONTINENTAL)

87        FUEL PUMP CIRCUIT FAULT

88        THROTTLE KICKER CIRCUIT FAULT (5.OL)

89        EXHAUST HEAT CONTROL VALVE CIRCUIT FAULT

91        RIGHT EGO ALWAYS LEAN

92        RIGHT EGO ALWAYS RICH

93        RIGHT EGO COOLDOWN OCCURRED

94        RlGHT SECONDARY AIR INOPERATIVE

95        RIGHT AIR ALWAYS UPSTREAM

96        RIGHT AIR ALWAYS NOT BYPASSED

97        RPM DROP (WITH FUEL LEAN) BUT RIGHT EGO RICH

98        RPM DROP (WITH FUEL RICH) BUT RIGHT EGO LEAN

 

 

1985 EEC-lV Service Codes:

11        SYSTEM " PASS "

12        RPM OUT OF SPEC (EXTENDED IDLE)

13        RPM OUT OF SPEC (NORMAL IDLE)

14        PIP WAS ERRATIC (CONTINUOUS TEST)

15        ROM TEST FAILED

16        RPM TOO LOW (FUEL LEAN TEST)

17        RPM TOO LOW (UPSTREAM/LEAN TEST)

18        NO TACH (IDM)

21        ECT OUT OF RANGE

22        MAP OUT OF RANGE (BP OUT OF RANGE 2.3L)

23        TPS OUT OF RANGE

24        ACT (VAT) OUT OF RANGE

25        KNOCK NOT SENSED IN TEST

26        MAP (VAF) OUT OF RANGE

31        EVP OUT OF LIMITS

32        EGR NOT CONTROLLING

33        EVP NOT CLOSING PROPERLY

34        NO EGR FLOW

35        RPM TOO LOW (EGR TEST)

36        FUEL ALWAYS RICH (AT IDLE)

37        FUEL ALWAYS LEAN (AT IDLE)

41        SYSTEM ALWAYS LEAN

42        SYSTEM ALWAYS RICH

43        EGO COOLDOWN OCCURRED

44        AIR MANAGEMENT SYSTEM INOPERATIVE

45        AIR ALWAYS UPSTREAM

46        AIR ALWAYS NOT BYPASSED

47        UP AIR/LEAN TEST ALWAYS RICH

48        LH FUEL CAUSES RH EGO REPS. (OR VISE-VERSA]

51        ECT INPUT TOO HIGH (OPEN WIRE)

52        PSPS - OPEN

53        TPS INPUT TOO HIGH (OPEN WIRE)

54        ACT (VAT) INPUT TOO HIGH (OPEN WIRE)

55        ELECTRICAL CHARGING UNDER VOLTAGE

56        MAF SHORT TO PWR (VAF HIGH)

58        ITS CLOSED (ENGINE RUNNING TEST)

61        ECT INPUT TOO LOW (GROUNDED WIRE)

63        TPS INPUT TOO LOW (OPEN/SHORTED WIRE)

64        ACT (VAT) INPUT TOO LOW (GROUNDED WIRE)

65        ELECTRICAL CHARGING OVER VOLTAGE

66        MAF (VAF) SHORTED/OPEN WIRE

67        NDS = DRIVE OR ACC = ON (ENGINE OFF)  (REGULAR FUEL MODE)

68        ITS OPEN (ENGINE OFF TEST)

72        NO MAP CHANGE IN "GOOSE" TEST

73        NO TPS CHANGE IN "GOOSE" TEST

74        BRAKE ON/OFF SWITCH ALWAYS OPEN OR BRAKE NOT ACTUATED DURING TEST

75        BRAKE ON/OFF SWITCH ALWAYS CLOSED

76        NO VAF CHANGE IN "GOOSE" TEST

77        OPERATOR DID NOT DO "GOOSE" TEST

81        OCC CIRCUIT #1 FAILED

82        OCC CIRCUIT #2 FAILED

83        OCC CIRCUIT #3 FAILED

84        OCC CIRCUIT #4 FAILED

85        OCC CIRCUIT #5 FAILED

86        OCC CIRCUIT #6 FAILED

87        OCC CIRCUIT #7 FAILED

88        OCC CIRCUIT #8 FAILED

89        OCC CIRCUIT #9 FAILED

91        RIGHT EGO ALWAYS LEAN

92        RIGHT EGO ALWAYS RICH

93        RIGHT EGO COOLDOWN OCCURRED

94        RIGHT SECONDARY AIR INOPERATIVE

95        RIGHT AIR ALWAYS UPSTREAM

96        RIGHT AIR ALWAYS NOT BYPASSED

97        RPM DROP (W/FUEL LEAN) BUT RIGHT EGO ALWAYS RICH

98        RPM DROP (W/FUEL RICH) BUT RIGHT EGO ALWAYS LEAN

 

 

1986 EEC-lV Service Codes:

11        SYSTEM " PASS "

12        RPM OUT OF SPEC (EXTENDED IDLE)

13        RPM OUT OF SPEC (NORMAL IDLE)

14        PIP ERRATIC

15        ROM TEST FAILED/KAM IN CONTINUOUS

16        RPM TOO LOW (FUEL LEAN TEST)

17        RPM TOO LOW (FUEL RICH TEST)

18        NO TACH (IDM)

19        VPWR TEST FAILED

21        ECT OUT OF RANGE

22        MAP OUT OF RANGE (BP OUT OF RANGE 2.3L)

23        TPS OUT OF RANGE

24        ACT (VAT) OUT OF RANGE

25        KNOCK NOT SENSED IN TEST

26        MAP (VAF) OUT OF RANGE

27        VSC SERVO LEAKS DOWN

28        VSC SERVO LEAKS UP

29        AXOD VES FAILED

31        *EPT SENSOR INPUT LOW (3.0L EFI) (2.9L EFI)

31        *EVP INPUT TOO LOW (2.3L HSC, CFI) (2.5L HSC, CFI)

            (5.0L SEFI)

31        EVP OUT OF LIMITS (1.8L EFI) (2.3L EFI T/C) (3.4L CFI)

            (2.3L EFI) (5.0L EFI)

32        *EPT SENSOR EXCEEDS LOW LIMIT '(2.9L EFl) (3.OL EFl)

32        *EVP OUT OF LIMITS '(2.3L HSC. CFl) (2.5L HSC. CFl)

            (5.OL SEFl)

32        *EGR NOT CONTROLLING (1.8L EFI) (2.3L EFI T/C) (3.4L CFl)

            (2.3L EFl) (5.OL EFI)

33        *NO EGR FLOW '(3.OL EFl) (2.9L EFl)

33        *NO EGR FLOW '(2.3L HSC, CFl) (2.5L HSC, CFl) (5.0L SEFl)

33        *EVP NOT CLOSING PROPERLY '(l.8L EFl) (2.3L EFI T/C)

            (3.4L CFl) (2.3L EFl) (5.OL EFl)

34        *EPT TOO HIGH (3.OL EFl) (2.9L EFl)

34        *EGR VALVE OUT OF LIMITS '(2.3L HSC, CFl)

            (2.5L HSC, CFl) (5.OL SEFl)

34        *NO EGR FLOW '(l.8L EFl) (2.3L EFI T/C) (3.4L CFl)

            (2.3L EFl) (5.0L EFl)

34        *EPT TOO HIGH (

35        *EPT ABOVE MAXIMUM '(3.OL EFl) (2.8L EFI)

35        *EVP INPUT TOO HIGH '(2.3L HSC, CFl) (2.5L HSC, CFl)

            (5.0L SEFl)

35        *RPM TOO LOW (EGR TEST) '(l.8L EFl) (2.3L EFI T/C)

            (3.4L CFl) (2.3L EFl) (5.0L EFl)

36        VSC DYNAMIC TEST - NO RPM INCREASE

37        VSC DYNAMIC TEST - NO RPM DECREASE

39        LUS NOT FUNCTIONING

41        FUEL LEAN

42        FUEL RICH

43        EGO COOLDOWN OCCURRED

44        2nd AIR INOPERATIVE

45        2nd AIR ALWAYS UPSTREAM

46        2nd AIR NOT ALWAYS BYPASSED

47        SCCS SWITCH BUTTON(S) NOT FUNCTIONAL

48        SCCS SWITCH BUTTON(S) - STUCK

49        SCCS SWITCH BUTTON(S) - SIGNAL RETURN OPEN

51        ECT VOLTAGE HIGH

52        PSPS OPEN

53        TPS VOLTAGE HIGH

54        ACT/VATT VOLTAGE HIGH

55        KEYPWR CIRCUIT OPEN (CFl)

56        VAF VOLTAGE HIGH

57        NPS FAILED IN NEUTRAL

58        ITS CLOSED (ENGINE RUN)

59        4/3 SWITCH FAILED OPEN

61        ECT VOLTAGE LOW

62        3/2 OR 4/3 SWITCH FAILED CLOSED

63        TPS VOLTAGE LOW

64        ACT/VAC VOLTAGE LOW

66        VAF VOLTAGE LOW

67        NDS = DRIVE OR ACC = ON (ENGINE OFF)

68        ITS OPEN (ENGINE OFF)

69        3/2 SWITCH FAILED OPEN

72        NO MAP CHANGE IN "GOOSE" TEST

73        NO TPS CHANGE IN "GOOSE" TEST

74        BRAKE ON/OFF SWITCH ALWAYS CLOSED OR

            NOT ACTUATED DURING TEST

75        BRAKE ON/OFF SWITCH ALWAYS CLOSED

76        NO VAF CHANGE IN "GOOSE" TEST

77        OPERATOR DID NOT DO "GOOSE" TEST

78        POWER RELAY INTERRUPT

81        *AM2 OPEN CIRCUIT SHORTED DRIVER (2.3L EFI T/C)

            (3.0L EFl) (5.0L SEFl) (2.9L EFl) (5.0L EFI)

81        *SCVNT OPEN CIRCUIT SHORTED DRIVER

            (2.5L HSC, CFl) (3.0L EFl)

82        *AMI OPEN CIRCUIT SHORTED DRIVER (2.3L EFI T/C)

            (3.0l EFI) (5.0 SEFI) (2.9L EFI) (5.0l EFI)

82        *SCVAC OPEN CIRCUIT SHORTED DRIVER (2.5L HSC, CFl)

            (3.0L EFl)

83        *EGRC OPEN CIRCUlT SHORTED DRIVER (3.8L CFl)

            2.3L EFl) (5.0L EFl)

83        *RDEF OPEN CIRCUIT SHORTED DRIVER (2.5L HSC, CFl)

            (3.0L EFl)

84        *EGRV OPEN CIRCUIT SHORTED DRIVER (3.8L CFl)

            (2.3L EFl) (5.0L EFl)

84        *EVR OPEN CIRCUIT SHORTED DRIVER (2.3L HSC, CFl)

            (2.5L HSC, CFl) (3.0L CFl) (5.0L SEFl) (2.9L EFl)

85        CANP OPEN CIRCUIT SHORTED DRIVER

86        WAC OPEN CIRCUIT SHORTED DRIVER

87        FP OPEN CIRCUIT SHORTED DRIVER

88        EDF OPEN CIRCUIT SHORTED DRIVER

89        *EHC OPEN CIRCUIT SHORTED DRIVER (3.1 EFI) (5.0L EFI)

89        *CCO OPEN CIRCUIT SHORTED DRIVER (2.3L HSC, CFI)

            (5.0l SEFI) (2.3l EFI) (2.9L EFI)

89        *LUS OPEN CIRCUIT SHORTED DRIVER (2.3L HSC, CFI)

            (3.0l EFI)

91        RIGHT EGO LEAN

92        RIGHT EGO RICH

93        EIGHT EGO COOLDOWN OCCURRED

94        RIGHT 2nd AIR INOPERATIVE

95        RIGHT 2nd AIR ALWAYS UPSTREAM

96        RIGHT 2nd AIR NOT ALWAYS BYPASSED

97        RPM DR OP (WITH FUEL LEAN) BUT NOT EGO RICH

98        FMEM HARD FAULT PRESENT

99        ISC NOT LEARNED (IGNORE CODES 12 & 13)

 

* Code description depends on which engine is installed. Refer to engine emissions diagnosis documentation.

 

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