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ECU Fault Codes

List of the Vi-PEC ECU fault codes that is in iVTS Help.

The following list shows possible ECU fault codes, causes and recommended solutions.  If a fault is displayed that is not listed, contact your dealer for further advice.  You can use Find (Ctrl F) on this page to find the fault code.

Fault codes are displayed in iVTS in the ECU Status runtime values.  They may also be displayed on a Check Engine Light or a digital dashboard display.

Fault codes can be cleared by selecting Clear Fault Codes in the ECU Controls drop down menu.

This list will be updated as new fault conditions are added.  Also check all iVTS runtime values for real time information on ECU parameters.

Fault CodeDescriptionCauseSolution
0 No Fault Everything is OK! None
1 RPM Limit RPM limit reached

The RPM limit was activated

This fault may occur as part of normal operation if RPM Limit Fault code is enabled

2 MAP Limit MAP limit reached

The MAP limit was activated

This fault may occur as part of normal operation if MAP Limit Fault code is enabled

10

13

16

19

22

25

28

31

34

37

40

43

46

49

52

An V1 at 5V

An V2 at 5V

An V3 at 5V

An V4 at 5V

An V5 at 5V

An V6 at 5V

An V7 at 5V

An V8 at 5V

An V9 at 5V

An V10 at 5V

An V11 at 5V

An T1 at 5V

An T2 at 5V

An T3 at 5V

An T4 at 5V

The voltage at the analog input pin has been above the Error High voltage for longer than one second

Sensor may be faulty

Temp channel sensor disconnected

Fault Settings incorrect

Sensor voltage is going to 5V as part of normal operation but high voltage fault detection is not disabled (Error High)

11

14

17

20

23

26

29

32

35

38

41

44

47

50

53

An V1 at Ground

An V2 at Ground

An V3 at Ground

An V4 at Ground

An V5 at Ground

An V6 at Ground

An V7 at Ground

An V8 at Ground

An V9 at Ground

An V10 at Ground

An V11 at Ground

An T1 at Ground

An T2 at Ground

An T3 at Ground

An T4 at Ground

The voltage at the analog input pin has been below the Error Low voltage for longer than one second

Sensor may be faulty

Volt channel sensor disconnected

Fault Settings incorrect

Sensor voltage is going to 0V as part of normal operation but low voltage fault detection is not disabled (Error Low)

12

15

18

21

24

27

30

33

36

39

42

45

48

51

54

An V1 Signal Error

An V2 Signal Error

An V3 Signal Error

An V4 Signal Error

An V5 Signal Error

An V6 Signal Error

An V7 Signal Error

An V8 Signal Error

An V9 Signal Error

An V10 Signal Error

An V11 Signal Error

An T1 Signal Error

An T2 Signal Error

An T3 Signal Error

An T4 Signal Error

The signal is not as expected

Some analog channel functions do checks on the input signal to make sure it is changing as expected (eg RPM and MAP are increasing but TPS did not change  or engine idling but TPS at 100%)

Check sensor operation and calibration

56 MAP at 5V The voltage at the analog input used for MAP Sensor has been above the Error High voltage for longer than one second This fault will be accompanied by a general Analog Input at 5V fault code.  Refer to that fault code for more information
57 MAP at Ground The voltage at the analog input used for MAP Sensor has been below the Error Low voltage for longer than one second. This fault will be accompanied by a general Analog Input at Ground fault code.  Refer to that fault code for more information
58 MAP Signal Error The MAP signal was not as expected This fault will be accompanied by a general Analog Input Signal Error fault code.  Refer to that fault code for more information
59 TPS at 5V The voltage at the analog input used for TPS Sensor has been above the Error High voltage for longer than one second This fault will be accompanied by a general Analog Input at 5V fault code.  Refer to that fault code for more information
60 TPS at Ground The voltage at the analog input used for TPS Sensor has been below the Error Low voltage for longer than one second This fault will be accompanied by a general Analog Input at Ground fault code.  Refer to that fault code for more information
61 TPS Signal Error The TPS signal was not as expected This fault will be accompanied by a general Analog Input Signal Error fault code.  Refer to that fault code for more information
62 ECT at 5V The voltage at the analog input used for ECT Sensor has been above the Error High voltage for longer than one second

This fault will be accompanied by a general Analog Input at 5V fault code.  Refer to that fault code for more information

This fault will be generated if the IAT sensor is unplugged and the Error High value is less than 5.00 V

63 ECT at Ground The voltage at the analog input used for ECT Sensor has been below the Error Low voltage for longer than one second

This fault will be accompanied by a general Analog Input Signal Error fault code.  Refer to that fault code for more information

64 ECT Signal Error The ECT signal was not as expected

This fault will be accompanied by a general Analog Input Signal Error fault code.  Refer to that fault code for more information

65 IAT at 5V The voltage at the analog input used for IAT Sensor has been above the Error High voltage for longer than one second

This fault will be accompanied by a general Analog Input at 5V fault code.  Refer to that fault code for more information

This fault will be generated if the ECT sensor is unplugged and the Error High value is less than 5.00 V

66 IAT at Ground The voltage at the analog input used for IAT Sensor has been below the Error Low voltage for longer than one second

This fault will be accompanied by a general Analog Input Signal Error fault code.  Refer to that fault code for more information

67 IAT Signal Error The IAT signal was not as expected

This fault will be accompanied by a general Analog Input Signal Error fault code.  Refer to that fault code for more information

68 Not Used

69 Electronic Throttle Control Max Duty Cycle Reached E-Throttle duty cycle has been within +/-5% of its maximum value continuously for more than 2 seconds

In this situation the E-Throttle system is shut down and cannot be restarted until the ECU power has been cycled. There may be something restricting throttle plate movement or the wiring to the throttle motor has been disconnected meaning the ECU has tried to move the throttle plate but has needed to apply to much power for too long

70 Electronic Throttle Control Max Duty Cycle Reached The E-Throttle duty cycle has been within +/-5% of its minimum value continuously for more than 2 seconds

In this situation the E-Throttle system is shut down and cannot be restarted until the ECU power has been cycled. There may be something restricting throttle plate movement or the wiring to the throttle motor has been disconnected meaning the ECU has tried to move the throttle plate but has needed to apply to much power for too long

71 Electronic Throttle Motor Driver (Aux 9/10) Supply Error If the voltage level drops below 7.0V for a continuous period of at least 2 seconds this fault code will be generated. The Electronic Throttle Control will immediately be shut down and will not be allowed to re-activate until the ECU power is cycled.  Note this is different to fault code 67 and indicates that Electronic Throttle Control was shut down

Measure the supply voltage.  Check for blown fuses

72 Electronic Throttle Control Sensor Supply Voltage Error If the 5V supply is less than 4.85V for a continuous period of at least 2 seconds this fault code will be generated. Electronic Throttle Control will immediately be shut down and will not be allowed to re-activate until the ECU power is cycled

73 Aux 9/10 Supply The voltage at the Aux 9/10 power supply pin was not as expected

This error applies to IF user1Red END<%BIG_ECU%> ECUs only

The Aux 9/10 power supply may have an electrical fault

Check Aux 9/10 Supply runtime value (found under ECU Status runtime values).  It should read similar to the Batt Voltage runtime value (found under Analog Inputs runtime values)

Check fuses

Check outputs wired to Aux 9 and Aux 10 are not shorted to ground

74 Analog 5V Supply Error The ECUs 5V Out voltage is not as expected

There may be a wiring fault on the 5V Out pin causing too much current draw

Check Analog Output Supply runtime value (found under ECU Status runtime values).  It should read between about 4.9 and 5.1 volts

75 Electronic Throttle Position Control Error Throttle Plate Position unable to track Target Position. In this fault state the throttle plate cannot maintain or achieve the desired target position. The Throttle Plate position and Target Position in steady state condition must remain at ALL times within +/- 2% of each other. When the Target position is changing the excepted tolerance is adjusted based on its rate of change.  If this tolerance is exceeded for a continuous period of at least 2 seconds this fault code will be generated

Redo TPS calibration procedure

Check Electronic Throttle Control tuning

Check mechanical operation of throttle actuator

76 TPS Main and TPS Sub tracking Error Throttle Plate Position Signal Tracking Error. Expected relative position between TPS (Main) and TPS (Sub) has exceeded the specified tolerance of +/- 3.0% for a continuous period of more than 2 seconds. In this fault state the ECU must assume the throttle plate feedback to be invalid and that a problem exists with either with the TPS(Main) or TPS(Sub) signal. The ECU cannot detect which signal is invalid which means the plate position is effectively unknown and cannot be controlled

Sensor Fault, test sensor

Sensor Calibration Fault, recalibrate sensors

77 FPS Main and FPS Sub tracking Error Foot Position Signal Tracking Error. Expected relative position between the FPS (Main) and FPS (Sub) has exceeded the specified tolerance of +/- 3.0% for a continuous period of more than 2 seconds. In this fault state the ECU must assume the foot position feedback to be invalid and that a problem exists with either with the FPS(Main) or FPS(Sub) signal. The ECU cannot detect which signal is invalid which means the foot position is effectively unknown. At this point the ECU will force a fault condition value to 5.0%. It should be noted that in this fault condition the ECU still has control over the throttle plate and this will continue to be controlled as normal which also means the Electronic Throttle Control isolating relay will remain ON

Sensor Fault, test sensor

Sensor Calibration Fault, recalibrate sensors

78 Throttle Plate Position (Main) Signal at ground TPS(Main) signal has been less then the specified “Error Low” fault condition for this channel for a continuous period of a more than 2 seconds

Wiring fault

79 Throttle Plate Position (Sub) Signal at ground TPS(Sub) signal has been less then the specified “Error Low” fault condition for this channel for a continuous period of a more than 2 seconds

Wiring fault

80 Throttle Plate Position (Main) Signal at 5V TPS(Main) signal has been greater then the specified “Error High” fault condition for this channel for a continuous period of a more than 2 seconds

Wiring fault

81 Throttle Plate Position (Sub) Signal at 5V TPS(Sub) signal has been greater then the specified “Error High” fault condition for this channel for a continuous period of a more than 2 seconds

Wiring fault

82 TPS(Main) not selected TPS(Main) has not been selected or has been de-selected on an analog channel when Electronic Throttle Control is being used

Wiring fault

83 TPS(Sub) not selected TPS(Sub) has not been selected or has been de-selected on an analog channel when Electronic Throttle Control is being used

Wiring fault

84 Aux 9/10 Driver Fault Over-Current/Over-Temperature warning from the electronic Throttle Control hardware contained inside the ECU

This is most likely caused by excessive current draw on the Aux 9/10 channels

85 Foot Position (Main) Signal at ground FPS(Main) signal has been less then the specified “Error Low” fault condition for this channel for a continuous period of a more than 2 seconds

Wiring fault

86 Foot Position (Sub) Signal at ground FPS(Sub) signal has been less then the specified “Error Low” fault condition for this channel for a continuous period of a more than 2 seconds

Wiring fault

87 Foot Position (Main) Signal at 5V FPS(Main) signal has been greater then the specified “Error High” fault condition for this channel for a continuous period of a more than 2 seconds

Wiring fault

88 Foot Position (Sub) Signal at 5V FPS(Sub) signal has been greater then the specified “Error High” fault condition for this channel for a continuous period of a more than 2 seconds

Wiring fault

89 FPS(Main) not selected FP(Main) has not been selected or has been de-selected on an Analog channel. Electronic Throttle Control has been shut down

Wiring fault

90 FPS(Sub) not selected FP(Sub) has not been selected or has been de-selected on an Analog channel. The Electronic Throttle Control has been shut down

Wiring fault