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OKI Error Codes

Refer to the following OKI Fatal Error Codes for instructions on how to resolve your error. If the error persists, or you require assistance, speak to one of our OKI trained technical support specialists.

Can’t find your error code on this page? Contact us, we’re happy to help.

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OKI Error Code Support

OKI Shop Technical Support: Mon-Fri 9am-5pm only. (Closed Sat & Sun.)
UK & Ireland business customers only.
We aim to respond to all support requests within 4 working hours.

    ×
    Panel DisplayCauseCheck DetailsResultSolutionRequest a Callback
    Service Call 001 ErrorMachine Check
    Exception hardware problem was detected (PCB failure or insufficient power capacity)
    (PDL only)
    When CE1 was not detected, SC001 occurs
    Replace the printer control PCB
    Power Off/On
    002:Error
    003:Error
    005:Error
    CPU unexpected exceptionDoes this error message reappear?YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    012:Error
    A watchdog timeout occurred due to no system timer interrupt for unknown reasonsDoes this error message reappear?YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    020:Error
    The CU FW in Nand FLASH has not been detected or a check SUM error has occurredDoes this error message reappear?YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    024:Error
    CU Font ROM Hash ErrorDoes this error message reappear?YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    030:Error
    CU RAM Check ErrorDoes this error message reappear?YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    040: Error
    CU EEPROM ErrorDoes this error message reappear?YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    042:Error
    043:Error
    045:Error
    Flash File System ErrorFailed to access to the Flash ROM that is mounted directly on the CU PCBFormat the Flash forcibly. (This requires caution as it erases NIC-F/W.
    The NIC-F/W must be written with the maintenance utility after formatting.) If the error remains replace the printer control PCB
    Service Call
    051: Error
    CU Fan Error
    Abnormal condition of the CPU cooling fan on the CU PCB
    Is the CPU Fan connected properly?


    Does it recover from the error by replacing the fan?
    No
    Yes

    No
    Connect it properly.
    Replace the fan.

    Replace the printer control PCB.
    Power Off/On
    052:Error
    DMA Abort Error was detected with Image ProcessorDoes this error message reappear?YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    067: Error
    A communication error was detected during communication with the Sleep Mode interface monitoring program.If power cycling does not solve the problem maintenance by a service engineer is required
    Service Call
    069:Error
    Malfunction of the NIC chip was detectedDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    070:Error
    Detection of abnormal condition of the PostScript firmwareDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    072:Error
    I/F error between PU and CUDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    073:Error
    xxxxxxxx
    Detection of abnormal condition during image data expansionDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    074:Error
    xxxxxxxx
    075:Error
    xxxxxxxx
    Detection of abnormal condition during image data expansionDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    077:Error xx
    Detection of abnormal condition during image data expansionDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    081:Error
    Does this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    104:Error
    The engine EEPROM implementation check at power on showed no problem, but after that a read/write error was detectedDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    106:Error
    Abnormal engine control logicDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    108:Error
    01: Detection of a watchdog timer errorDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    02: Detection of an undefined interruptionDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    03: Runaway of the CPU on the PU due to noise etc.Does this error recur?YesPower OFF/ON

    Replace the printer control PCB
    04: Runaway of the Port CPU due to noise etc.Does this error recur?YesPower OFF/ON

    Replace the printer control PCB
    05: Failure of Access to the Dcon circuit of the printer control PCBDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    09: Detection of an error in clock adjustment to the duplex unitDoes this error message reappear after power restoration

    Does this error message reappear after power restoration?
    Yes


    Yes
    Replace the unit concerned


    Replace the Printer Control PCB
    0B: Detection of an error in clock adjustment to tray 2 Does this error message reappear after power restoration

    Does this error message reappear after power restoration?
    Yes


    Yes
    Replace the unit concerned


    Replace the Printer Control PCB
    0C: Detection of an error in clock adjustment to tray 3Does this error message reappear after power restoration

    Does this error message reappear after power restoration?
    Yes


    Yes
    Replace the unit concerned


    Replace the Printer Control PCB
    0D: Detection of a error in clock adjustment to tray 4Does this error message reappear after power restoration

    Does this error message reappear after power restoration?
    Yes


    Yes
    Replace the unit concerned


    Replace the Printer Control PCB
    0E: Detection of a error in clock adjustment to tray 5Does this error message reappear after power restoration

    Does this error message reappear after power restoration?
    Yes


    Yes
    Replace the unit concerned


    Replace the Printer Control PCB
    0F: Communication failure with the spot color PCBDoes this error recur?

    Does this error recur?
    Yes

    Yes
    Power OFF/ON

    Replace the spot color PCB

    Replace the printer control PCB
    10: Runaway of the Driver CPU due to noise etc.Does this error recur?

    Does this error recur?
    Yes

    Yes
    Power OFF/ON

    Replace the driver relay PCB

    Replace the printer control PCB
    Service Call
    111:Error
    A duplex unit for another model was detectedIs a duplex unit provided for this model installed?YesInstall a correct duplex unit
    Service Call
    112:Error
    A 2nd Tray for another model was detectedIs a 2nd Tray provided for this model installed?YesInstall a correct 2nd Tray
    Service Call
    113:Error
    A 3rd Tray for another model was detectedIs a 3rd Tray provided for this model installed?YesInstall a correct 3rd Tray
    Service Call
    114:Error
    A 4th Tray for another model was detectedIs a 4th Tray provided for this model installed?YesInstall a correct 4th Tray
    Service Call
    115:Error
    A 5th Tray for another model was detectedIs a 5th Tray provided for this model installed?YesInstall a correct 5th Tray
    Service Call
    121:Error
    High Voltage power supply interface errorIs the fuse on the printer control PCB blown?

    Is the cable connecting the printer control PCB to the high voltage power supply unit connected properly?



    Is there any defective contact point?
    Yes


    No

    Yes



    No
    Replace the printer control PCB (then check the following)

    Re-connect it properly.

    Check for defective contact points of the high voltage system

    Replace the high voltage power supply unit.
    Service Call
    123:Error
    Abnormal environment humidity or unconnected humidity sensorDoes this error recur?


    Does this error recur?
    Yes


    Yes
    Power OFF/ON

    Replace the environmental sensor board and the FFC

    Replace the printer control PCB
    Service Call
    124:Error
    Abnormal environment humidityDoes this error recur?


    Does this error recur?
    Yes


    Yes
    Power OFF/ON

    Replace the environmental sensor board and the FFC

    Replace the printer control PCB
    Service Call
    125:Error
    Multi-purpose Tray
    Home Error
    Does the motor run in the motor testing of the PU self-diagnostic mode?Yes





    No
    Check the sensor cable for a break or short and the connector semi-locking relay PCB and the printer control PCB for abnormal condition.

    Check the hopping motor and the gear train for abnormal condition.
    Power Off and wait for a while
    126: Condensing Error
    Dew condensation in the printer was detected.This error tends to occur after a printer is carried in from the outsides.
    Leave the printer for 2 hours to half a day at room temperature, and turn on the power.

    Does this error recur?


    Does this error recur?

    Yes


    Yes
    After leaving the printer at room temperature, turn on the power again.



    Replace the environmental sensor board and the FFC.

    Replace the printer control PCB
    Service Call
    128:Error
    01: Fuser Exhaust
    Fan 1
    02: Low Voltage Fan
    03: PU Fan
    05: Station 1 ID
    Intake Fan
    09: Second Transfer
    Absorption Fan
    0A: Fuser Intake Fan
    0B: Station 2 ID
    Intake Fan
    0C: Duplex Fan
    0D: Fuser Exhaust
    Fan 2
    0E: Station 3 ID
    Intake Fan
    0F: Station 4 ID
    Intake Fan
    10: Station 5 ID
    Intake Fan
    Is the cable to respective fans connected properly?

    Does this error recur?
    No


    Yes

    No

    Re-connect it properly.


    Replace the fan motor.

    Replace the applicable PCB
    01: Driver relay PCB
    02: Printer Control PCB
    03: Printer Control PCB
    05: Driver Relay PCB
    09: Rail unit relay PCB
    0A: Driver relay PCB
    0B: Driver relay PCB
    0C: Duplex unit PCB
    0D Driver relay PCB
    0E: Driver relay PCB
    0F: Driver relay PCB
    10: Driver relay PCB

    Service Call
    134: Error
    LED head detection error
    (01=K, 02=C, 03=M, 04=Y, 05=W/CL)
    Is the fuse blown?
    134-5: Spot color PCB
    134-01 to 04: Printer
    control PCB




    Does this error recur?

    Does this error recur?
    Yes




    No


    Yes

    Yes
    Replace the PCB.
    Correct the FFC connection condition between the LED head and the PCB

    Correct the FFC connection condition.

    Replace the LED head unit

    Replace either applicable PCB.
    134-01 to 04:
    Printer control PCB
    134-05: Spot color PCB
    Service Call
    135: Error
    01: Tray 1 Lift-up
    Motor Error
    02: Tray 2 Lift-up
    Motor Error
    03: Tray 3 Lift-up
    Motor Error
    04: Tray 4 Lift-up
    Motor Error
    05: Tray 5 Lift-up
    Motor Error
    Remove the paper cassette. Does the motor run in motor testing?



    Is the fuse on the PCB blown?

    Is the motor resistant value abnormal, or is the motor wire disconnected or shorted?
    Yes

    No


    Yes

    Yes

    No
    Replace the paper cassette.

    Do the following check on motors and PCBs:

    Replace the PCB.

    Replace the motor.

    Replace the PCB.
    01: Printer Control PCB
    02 to 05: Option tray PCB
    07: Belt Motor Lock ErrorRemove the belt unit. Does the motor run in motor testing?



    Is there any abnormality with the mechanism, such as a blown motor fuse, a disconnected or shorted motor wire, and a broken gear?
    Yes

    No


    Yes


    No
    Replace the Belt.

    Do the following check on motors and PCBs:

    Replace the motor, cable and belt motor driving mechanism.

    Replace the printer control PCB
    Service Call
    135: Error
    09: Fuser Motor Lock ErrorRemove the fuser. Does the motor run in motor testing?



    Is there any abnormality with the mechanism, such as a blown motor fuse, a disconnected or shorted motor wire and a broken gear?
    Yes

    No


    Yes


    No
    Replace the fuser.

    Do the following check on motors and PCBs:

    Replace the motor, cable, fuser motor driving mechanism.

    Replace the printer control PCB
    11: Station 1 ID Motor Lock Error
    12: Station 2 ID Motor Lock Error
    13: Station 3 ID Motor Lock Error
    14: Station 4 ID Motor Lock Error
    15: Station 5 ID Motor Lock Error
    Remove the ID unit. Does the motor run in motor testing?



    Is the motor fuse blown?

    Is the motor wire broken or shorted

    Does the error recur?
    Yes

    No


    Yes

    No

    Yes
    Replace the ID unit.

    Do the following check on motors and PCBs:

    Replace the motor.

    Replace the driver relay PCB

    Replace the ID motor driving mechanism
    Service Call
    143: Error
    Image drum Up/Down position detection error
    (01=K, 02=C, 03=M, 04=Y, 05=W/CL)
    Reinstall the ID unit and the belt unit and then power off/on. Does the error recur?

    Detach the ID unit. Remove the rear cover and inspect the initial movement. Is there any abnormality with up/down movement?
    Yes



    No

    Yes
    Inspect the following:



    Replace the ID unit.

    Inspect the driver replay PCB, ID up/down sensor, ID motor driving mechanism.
    Service Call
    147: Error
    Toner supply motor
    error (01=K, 02=C, 03=M, 04=Y, 05=W/CL)
    Remove the toner cartridge. Does the motor run in motor testing?



    Is the motor resistant value abnormal, the motor wire disconnected or shorted?

    Does the error recur?
    Yes

    No


    Yes

    No

    Yes
    Replace the toner cartridge.

    Do the following check on motors and PCBs

    Replace the motor.

    Replace the driver relay PCB

    Replace the Toner supply mechanism.
    Service Call
    163: Error
    Toner sensor detection error
    (01=K, 02=C, 03=M, 04=Y, 05=W/CL)
    This error does not occur with the factory default settings.
    Is the stopper (orange) removed?

    Is the ID unit prism soiled?


    Does this error recur?


    Does this error recur?
    No


    Yes
    No

    Yes


    Yes
    Remove the stopper.


    Clean it.
    Replace the ID unit.

    Replace the driver replay PCB

    Replace the toner low sensor board and the cable.
    Service Call
    166: Error
    An abnormality was detected with the power supply temperature thermistor.
    01: The power supply thermistor is detected as shorted.
    02: The power supply thermistor is detected as open.
    03: The power supply thermistor indicates high temperature error
    04: The power supply thermistor indicates low temperature error
    Does this error recur?

    YesPower OFF/ON

    Replace the printer control PCB
    Service Call
    167: Error
    Thermistor slope errorIs the error message displayed?

    Does this error recur?
    Yes

    Yes
    Restore the power

    After leaving the printer for 30 minutes, turn on the power
    Service Call
    168: Error
    01: Thermistor is
    detected as shorted
    02: Thermistor is
    detected as open
    03: Thermistor is
    indicates high
    temperature error
    04: Thermistor indicates
    low temperature
    error
    Is the error message displayed?

    Does this error recur?
    Yes

    Yes
    Restore the power

    After leaving the printer for 30 minutes, turn on the power again. When the power is restored for the 168-03 error, the display changes to Service Call 994: Error
    Service Call
    169: Error
    01: Thermistor is detected as shorted
    02: Thermistor is detected as open
    03: Thermistor is indicates high temperature error
    04: Thermistor indicates low temperature error
    Is the error message displayed?

    Does this error recur?
    Yes

    Yes
    Restore the power.

    After leaving the printer for 30 minutes, turn on the power again.
    Service Call
    170: Error
    171: Error
    Short circuit (170) or open circuit (171) of the fuser thermistor was detected.Does this error recur?YesRestore the power.
    Replace the fuser unit.
    Service Call
    172: Error
    173: Error
    An abnormal (172: high or 173: low)
    temperature of the fuser thermistor was
    detected
    Does this error recur?YesRestore the power.
    Replace the fuser unit.
    When the power is restored, the display may change to Service Call 994: Error in some cases.
    Service Call
    181: Error
    182: Error
    183: Error
    184: Error
    185: Error
    Option unit I/F error
    (181 = Duplex Unit.
    182, 183, 184, 185 = Optional Tray)
    Does this error recur?YesRestore the power.
    Check to make sure the contact points of the connector and replace the optional unit

    Service Call
    188: Error
    01: Error in
    communication
    with Port CPU
    Does this error recur?YesPower OFF/ON

    Replace the printer control PCB
    02: Error in
    communication
    with Driver CPU
    Does this error recur?YesReplace the Driver PCB
    Power Off/On
    190: Error
    System memory overflowDoes this error recur?YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    203: Error
    204: Error
    CU program error (not occur in normal operation)Does this error recur? YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    207: Error
    208: Error
    CU program error (not occur in normal operation)Does this error recur? YesPower OFF/ON

    Replace the printer control PCB
    Power Off/On
    213: Error
    214: Error
    CU program error (not occur in normal operation)Does this error recur? YesPower OFF/ON

    Replace the printer control PCB
    Serice Call
    230: Error
    Tag Reader MissingDoes this error recur?

    Does this error recur?
    Yes

    Yes
    Power OFF/ON

    Replace the tag reader/writer PCB and the FFC.

    Replace the printer control PCB
    Service Call
    231: Error
    01: PU-Tag Reader Interface Error
    02: Tag Reader circuit abnormality
    03: Tag Interface error
    Does this error recur?

    Does this error recur?
    Yes

    Yes
    Power OFF/ON

    Replace the tag reader/writer PCB and the FFC.

    Replace the printer control PCB

    Service Call
    241: Error

    245 Error
    Engine Program
    Memory Error
    241: DUPLEX Flash memory error
    242: Option Tray 2
    243: Option Tray 3
    244: Option Tray 4
    245: Option Tray 5
    Does this error recur?YesPower OFF/ON

    241: Replace the DUPLEX PCB.
    242-5: Replace the option try PCB

    Service Call
    247: Error
    Engine PORT CPU
    Program Memory Error
    Does this error recur?Yes

    Power OFF/ON

    Replace the printer control PCB

    Service Call
    249: Error
    Engine DRIVER
    CPU Program Memory Error
    Does this error recur?Yes

    Power OFF/ON

    Replace the printer control PCB

    Power Off/On
    250: Error
    Secure File Erasing ErrorAn encrypted file erasing error was detected.
    Did the user accept to execute HDD ERASE?

    ADMIN MENU
    HDD ERASE
    Informing the user of the necessity to execute Disk
    ERASE to delete the encrypted file and restore the HDD defaults
    Service Call
    251: Error
    Secure Disk Erasing ErrorAn Error was detected during Disk ERASE. Does this error message reappear?YesPower OFF/ON

    Replace the HDD
    Service Call
    254: Error
    An unexpected error occurred during initialization of the Security mode.
    Error cause information is displayed after the error code number
    Does this error message reappear?YesPower OFF/ON

    Regenerate an encryption key. If it doesn't solve the problem, replace the CU PCB

    Service Call
    257: Error
    An unexpected error occurred during initialization of the HDD
    Error cause information is displayed after the error code number
    Does this error message reappear?YesPower OFF/ON

    Format the HDD again. If it does not solve the problem, replace the HDD
    Service Call
    260: Error
    Heater thermistor errorCycle the power.

    Replace the Fuser Unit.

    If error not cleared, power OFF and check conditions of cables between CU/PU board (ME2 PCB) and the relay board (MER PCB) and the Fuser Unit.

    If no damage to cables replace CU/PU board (ME2 PCB) and the relay board (MER PCB).
    Service Call
    261: Error
    Heater side1 thermistor error (L)
    Service Call
    262: Error
    Heater side2 thermistor error (L)
    Service Call
    263: Error
    Heater side1 thermistor error (R)
    Service Call
    264: Error
    Heater side2 thermistor error (R)
    Service Call
    265: Error
    Lower1 thermistor error (L)
    Service Call
    266: Error
    Lower2 thermistor error (L)
    Service Call
    267: Error
    Lower3 thermistor error (L)
    Service Call
    268: Error
    Lower1 thermistor error (R)
    Service Call
    269: Error
    Lower2 thermistor error (R)
    Service Call
    270: Error
    Lower3 thermistor error (R)
    Service Call
    271: Error
    Center NC sensor detecting error
    Service Call
    272: Error
    Center NC sensor compensating error
    Service Call
    273: Error
    Center NC sensor temperature after compensating error
    Service Call
    274: Error
    Error detecting the Fuser Unit cover temperaturePower OFF/ON

    If error not cleared, power OFF and check conditions of cables between CU/PU board (ME2 PCB) and the relay board (MER PCB) and the Fuser Unit.

    If no damage to cables replace CU/PU board (ME2 PCB) and the relay board (MER PCB).
    Power Off/On
    901: Error
    902: Error
    Short circuit (901) or open circuit (902) with the belt thermistor was detectedCheck the belt thermistor wiring. Is there any abnormal condition with the belt unit, contact substrate which is the tag terminal PCB of the printer unit, or the cable?Yes


    No
    Replace the part or the belt unit.

    Replace the driver relay PCB
    Power Off/On
    903: Error
    904: Error
    The belt thermistor detected abnormal temperature.
    903: too high
    904: too low
    Check the belt thermistor wiring. Is there any abnormal condition with the belt unit, contact substrate which is the tag terminal PCB of the printer unit, or the cable?Yes


    No
    Replace the part or the belt unit.

    Replace the driver relay PCB
    Inspection is required.
    980 : Error
    Media jamming error around fuser.Media is jammed by entangling around the fuser.
    Turn off the MFP.
    Replace the fuser.
    Inspection is required.
    990 : Error
    Waste toner sensor detection errorIs the K toner cartridge installed?

    Does the error occur again?
    No


    Yes
    Install the K toner cartridge.

    Be sure of cable connection, and then perform board replacement.
    Service Call
    993: Error
    An error was detected with the paper thickness sensor power cableDoes this error recur?

    Does this error recur?
    Yes


    Yes
    Power OFF/ON

    Replace the paper thickness sensor and the cable

    Replace the printer control PCB
    Service Call
    994: Error
    A fuser where a high temperaure error was detected is installedDoes this error recur?YesPower OFF/ON

    Replace the fuser unit
    Power Off/On
    FOC: Error
    CU program errorDoes this error recur?YesPower OFF/ON

    Replace the Printer control PCB
    Power Off/On
    FFF: Error
    CU program errorDoes this error recur?YesPower OFF/ON

    Replace the Printer control PCB
    Note:
    Service call errors, 171: Error, 166-02: Error, 168-02: Error, 169-02: Error 0169-04: Error and 902: Error can occur when the printer temperature is under 0 degrees centigrade; therefore, if the printer temperature is low, turn on the printer after the printer temperature has risen enough.