CAT forklifts error codes list

D-51 – Memory check error
D-52 – Battery voltage error
D-53 – VCM communication error
D-54 – ECM communication error
D-55 – DCM communication error
D-57 – MP communication error
D-61 – Engine overrun
D-62 – Revolution pulse error
D-63 – Overheat signal (STEP1)
D-64 – Overheat signal (STEP2)
D-71 – Accelerator sensor error signal
D-73 – Engine revolution sensor error
D-75 – Idling SW error
D-76 – Throttle close position error
D-77 – Throttle open position error
D-78 – Throttle reference point error
D-79 – Throttle close SW stick error
D-91 – Stepping motor error

E-03 (E03)– VCM communication error
From Caterpillar discussion forum: E03 code is a loss of communication from the VECU controller. Be sure to check your battery and all your cables and connections for any type of corrosion or damage and all of your fuses and relays. Verify that you have power and ground going to your VCEU and engine controllers. If this checks out okay you could have a problem with in the wiring harness or a potential failed controller and software-related you causing your loss of communication. Have the proper diagnostic software plugged into this lift to see if you can communicate with the controllers.

E-04 (E04)– ECM communication error
From Caterpillar discussion forum: Check fuses first. Then make sure the battery is charging properly. When the forklift is running at idle speed, the battery will charge at over 14 volts if the alternator is working properly. If the battery is in good condition but the voltage reading is under 14 volts, you may have a bad alternator or bad wiring leading to the alternator.
Also check wiring connections for debris, looseness, and even very small amounts of corrosion.
You can try to clear the codes by disconnecting the battery cables, holding them together for a minute, and then reconnecting them to the battery.

E-05 (E05)– DCM communication error
E-07 (E07)– MP communication error

E-21 (E21)– Air flow meter error signal
From Caterpillar discussion forum: Potentially bad air flow meter. There could also be an issue with the wiring at the connector. The connector is replaceable.

E-22 (E22)– Water temperature sensor error signal
From Caterpillar discussion forum: First check the wiring and connection to the engine temperature sensor. Also check the sensor.

E-23 (E23)– Throttle sensor error signal
From Caterpillar discussion forum: If you’re getting the E23 code and the forklift is dying then you have a throttle position sensor error. Hard to say exactly what your forklift needs. I might need a new position sensor – which is located under the pedal. Might have dirty connections, a wire with a little damage, or something else.
The ETC relays can cause this problem also. ETC23 fault- Throttle sensor or wiring circuit is open or shorted. This malfunction occurs in the relation between throttle position sensors 1 and 2. These sensors are internal to the TPS and are not servicable.
The most common issue causing this error is a broken wire at the TPS harness plug, usually finding the white/orange wire broken. Also check the EGI relays in the relay box.

E-24 (E24)– Accelerator sensor error signal
From Caterpillar discussion forum: You can check the accelerator pedal connection to the wiring harness. Should be connected just below the floor plate – check for looseness, debris and corrosion. There may also be a stop screw to adjust pedal travel that is out of range. And the accelerator pedal might have gone bad.

E-25 (E25)– 02 sensor error signal
From Caterpillar discussion forum: You can try disconnecting the cables on your battery and hold them together for about a minute. Then put them back on the battery and see if the code is still coming up.

E-26 (E26)– 02 sensor heater error signal
From Caterpillar discussion forum: The code you have is a fault with the O2 sensor heater circuit. I would inspect the O2 sensor wiring harness for damage, including the plug. Then replace the O2 sensor. The bent exhaust pipe may have caused this if it pinched a wire or damaged the O2 sensor.

E-27 (E27)– POS sensor error signal
From Caterpillar discussion forum: The E27 code is a crankshaft position sensor code. What condition is your spark plugs in? Check the sensor plug to make sure it’s seated all the way. Normally with E27, the engine will not start.
For the no lift and travel, see if the seat switch is bypassed. If it is plugged in, check with a voltmeter to see if the switch is closing.

E-28 (E28)– PHASE sensor error signal
From Caterpillar discussion forum: Code E-28 is for camshaft position sensor error. The sensor is located on the front of the engine just under/behind the fan i would recommend changing out both the cam and crank sensors as a pair. Will have to remove the fan to get to both of them,also check the connectors for broken wires,if debris got up around them then wiring could be an issue. they are relatively easy to change,you just need a 10 mm socket and an extension to take them out and the connectors are different on both the sensors so cant get them mixed up.

E-29 (E29)– Self-shut system error

E-30 (E30)– ECCS C/U error signal
From Caterpillar discussion forum: No power supplied to the ECM or ECM detects an insufficient voltage supply.- No or low or high supplied power to the ECM. The most common causes :- EGI relay 1 open or short circuit- EGI Relay 2 open or short circuit- Main C relay open or short circuit- Ignition relay open or short circuit- Open ground circuit- Open across fuse: F6- EGI relay 1 or F7- EGI relay 2 open circuit- Corroded or broken wires at the ECM or lower left side step plate relay box and body ground.- Internal open or short in the ECM- Abnormally low or high ECM to sensor output voltage detected Star by checking battery voltage and all battery cables and grounds Under battery is a ground stud check all for corrosion and loose connections, check cables do a voltage drop test, check all fuses for tightness and corrosion.You most likely have a loose connection on power supply.

E-31 (E31)– Electronic control throttle control error signal
From Caterpillar discussion forum: Cat forklift code E-31 typically indicates a problem with the accelerator pedal or throttle sensor. This code may be triggered when the forklift’s electronic control module (ECM) detects a discrepancy between the accelerator pedal position and the actual speed of the forklift. This can be caused by a faulty sensor, wiring issues, or other problems with the accelerator pedal.
If you are experiencing this issue with your Cat forklift, it is recommended that you consult the forklift’s user manual or contact a qualified technician to diagnose and repair the problem. They may need to use specialized diagnostic tools to identify the specific cause of the E-31 code and make any necessary repairs.

E-32 (E32)– Overheat signal (STEP1)
From Caterpillar discussion forum: You will need to check your cooling system fluid level in the radiator, have you done any work to this forklift recently? If you have opened the cooling system previously you will need to bleed the air from the screw at the top of the water pump. Check for a dirty or plugged radiator fins. This is very common on these forklifts because the radiator is in the back and air usually has a hard time getting through dirty fins. Blow this out thoroughly with compressed air and recheck coolant level in the radiator and overflow tank.

E-33 (E33)– Overheat signal (STEP2)
From Caterpillar discussion forum: You will need to check your cooling system fluid level in the radiator, have you done any work to this forklift recently? If you have opened the cooling system previously you will need to bleed the air from the screw at the top of the water pump. Check for a dirty or plugged radiator fins. This is very common on these forklifts because the radiator is in the back and air usually has a hard time getting through dirty fins. Blow this out thoroughly with compressed air and recheck coolant level in the radiator and overflow tank.

E-34 (E34)– Spark system error signal
From Caterpillar discussion forum: Trouble shoot by checking by checking wires in coil connectors. Then check each coil connector while the machine is running to see if one causes the machine to run rough.

E-35 (E35)– LPG F/INJ disconnection diagnostic result signal
From Caterpillar discussion forum: Listed possible causes for the E35 error are as follows:
– open or short detected in the fuel injection circuit
– broken wire(s) in the harness (at the injector)
– damaged or loose pin in the fuel injector connector or ECM connector
– failed EGI2 relay or main C relay
– loose connection at the base of the relay box 2 (blue relay box)
– open or short internally in the relay box 2
– fuel pressure too high at the injector
– failed injector
– failed ECM
There is also a note in the HPK document stating that high pressure washing can cause this error due to water entering the ECM connectors, injector driver connector, relay box, fuse box, fuse holder(located under the main injector) or main injector coil

E-36 (E36)– LPG fuel pressure sensor diagnostic result signal
From Caterpillar discussion forum: I have just about always found this to be an issue with the connector on the LPG pressure sensor. Caterpillar has a short pigtail harness available to clip and replace the bad connector if necessary.

E-38 (E38)– LPG vaporizer diagnostic result signal
From Caterpillar discussion forum: Code E-38 is vaporizer malfunction, generally when this code shows the Vaporizer needs rebuilt. Is cheaper to rebuild a NIKKI vaporizer than it is to replace it with a new one. Is just a handful of diaphragms and a “flapper valve” assembly Tar rots the diaphragms and they rupture and cause over pressure if it is to bad then it gets to the injector and injector holder assembly,in that case will need to take apart and clean the injector holder and injector or just replace the injector and be safe with it.

E-39 (E39)– Mast-high SW diagnostic result signal

E-40 (E40)– Oil pressure sensor diagnostic result signal
From Caterpillar discussion forum: Code 40 is a line contactor fault. Basically line contactor is commanded to activate (close tips) but it’s not happening or the system is not seeing it. When key is turned on, does line contactor tips close..if yes, do a volt drop across them to confirm the tips are (should be.2-.5volt drop or less across tips when closed. If contact tips are not closing (contactor not being activated) you can check for activation of the line contactor at the logic card plug 5 pin 59. Plug 5 is the third plug on the logic card, going from left to right it is plug 3, plug 4 ,plug 5. Back probe in to pin 59 and turn on key. You see momentarily battery voltage and then it should drop to approximately 20-26 volts (off the top of my head). If you don’t see it drop then you have a failure in the logic card of the driver for the line contactor. Replace logic card.

E-41 (E41)– Stop lamp SW error signal
From Caterpillar discussion forum: The code E41 is listed as a steering contactor fault. The problem is normally in a high steering pressure problem (1100 psi in cramped position) that can be adjusted at the orbital or a steer motor problem. The early trucks had a brush type motor that usually failed and was replaced by a brush less dc motor. I know the brush less motor has a led on top that should stay green turning yellow as it reaches relief. If it turns red you get a code 41. If you find you have a motor problem and you install a brush less motor you need to add a SE000238 ESD filter between the motor terminals. The bottom side of this has a tang that should touch the motor case. This is a flat circuit board looking thing that bridges the motor terminal with plus and negative markings. The small wires should have a white ceramic ferite clamp 97E0409900 across them. The ESD filter helps with the voltage spikes.

F-01 – VCM-3 Memory Check Error
Indication: “F01” flickering. Drive and hydraulic operations disabled.
Possible cause: Faulty VCM-3, faulty truck type setting data in VCM-3.
How the error code is triggered: Software checks sum value of ROM and EEPROM in CPU, and detects fault.

F-02 – VCM-3 Battery Voltage Error
Indication: “F02” flickering. Drive and hydraulic operations disabled.
Possible cause: Poor battery charge, faulty battery, faulty VCM-3, faulty harness, faulty DC-DC converter.
How the error code is triggered: When VCM-3 input voltage is less than 7V or more than 21V.

F-03 – VCM-3 Communication Error
Indication: “F03” flickering. Drive and hydraulic operations disabled.
Possible cause Faulty VCM-3, faulty harness.
How the error code is triggered: When CAN communication of VCM-3 is interrupted.

F-04 – ECM Communication Error
Indication: “F04” flickering.
Possible cause: Faulty VCM-3, faulty harness, faulty ECM.
How the error code is triggered: When CAN communication from ECM to VCM-3 is interrupted.

F-05 – DCM communication error

F-06 – OCM communication error

F-07 – MP Communication Error
Indication: “F07” flickering. Drive operations disabled.
Possible cause: Faulty meter panel, faulty VCM-3, faulty harness.
How the error code is triggered: When CAN communication from meter panel to VCM-3 is interrupted.

F-09 – Operation setting communication error

F-10 – Lift Lever Neutral Error
Indication: “F10” flickering. Hydraulic operations disabled.
Possible cause: Lift lever operated when turning on key switch, faulty lift lever, faulty input unit, faulty harness.
How the error code is triggered: Lift lever is not in neutral when turning on key switch.

F-11 – Tilt Lever Neutral Error
Indication: “F11” flickering. Hydraulic operations disabled.
Possible cause: Tilt lever operated when turning on key switch, faulty tilt lever, faulty input unit, faulty harness.
How the error code is triggered: Tilt lever is not in neutral when turning on key switch

F-12 – Attachment 1 Lever Neutral Error
Indication: “F12” flickering. Hydraulic operations disabled.
Possible cause: Attachment 1 lever operated when turning on key switch, faulty attachment 1 lever, faulty input unit, faulty harness.
How the error code is triggered: Attachment 1 lever is not in neutral when turning on key switch.

F-13 – Attachment 2 Lever Neutral Error
Indication: “F13” flickering. Hydraulic operations disabled.
Possible cause: Attachment 2 lever operated when turning on key switch, faulty attachment 2 lever, faulty input unit, faulty harness.
How the error code is triggered: Attachment 2 lever is not in neutral when turning on key switch.

F-14 – Attachment 3 Lever Neutral Error
Indication: “F14” flickering. Hydraulic operations disabled.
Possible cause: Attachment 3 lever operated when turning on key switch, faulty attachment 3 lever, faulty input unit, faulty harness.
How the error code is triggered Attachment 3 lever is not in neutral when turning on key switch.

F-15 – ECU Communication Error
Indication: “F15” flickering. Drive operations restricted.
Possible cause: Faulty ECU, faulty VCM-3, faulty gateway, faulty harness.
How the error code is triggered: When CAN communication from ECU(gateway) to VCM-3 is interrupted.

F-16 – Shift Lever Error
Indication: “F16” flickering. Drive operations disabled.
Possible cause: Faulty meter panel, faulty VCM-3, faulty harness.
How the error code is triggered: When F, N and R signals of shift lever are inputted simultaneously.

F-17 – Forklift Speed Error
Indication: “F17” flickering.
Possible cause: Forklift speed over limit, Faulty VCM-3, faulty harness.
How the error code is triggered: When vehicle speed is 35 km/h or more.

F-18 – ECU KWP2000 Communication Error
Indication: “F18” flickering. Drive operations disabled.
Possible cause: Faulty ECU, faulty gateway, faulty harness.
How the error code is triggered: When KWP2000 communication from ECU to gateway is interrupted.

F-19 – ECU Speed Sensor Error
Indication: “F19” flickering. Drive operations restricted.
Possible cause: Faulty gateway, faulty VCM-3, faulty ECU, faulty harness.
How the error code is triggered: When vehicle speed pulse signal to ECU is interrupted. Abnormal signal is sent from ECU.

F-20 – Lift Lever Error
Indication: “F20” flickering. Lift up and lift down operations disabled.
Possible cause: Faulty lift lever, faulty input unit, faulty harness.
How the error code is triggered: hen lift lever signal voltage is out of range of 0.25V to 4.75V.

F-22 – Tilt Lever Error
Indication: “F22” flickering. Tilt forward and tilt backward operations disabled.
Possible cause: Faulty tilt lever, faulty input unit, faulty harness.
How the error code is triggered: When tilt lever signal voltage is out of range of 0.25V to 4.75V.

F-24 – Attachment 1 Lever Neutral Error
Indication: “F24” flickering. Attachment 1 operation disabled.
Possible cause: Faulty attachment 1 lever, faulty input unit, faulty harness.
How the error code is triggered: When attachment 1 lever signal voltage is out of range of 0.25V to 4.75V.

F-26 – Attachment 2 Lever Neutral Error
Indication: “F26” flickering. Attachment 2 operation disabled.
Possible cause: Faulty attachment 2 lever, faulty input unit, faulty harness.
How the error code is triggered: When attachment 2 lever signal voltage is out of range of 0.25V to 4.75V.

F-28 – Attachment 3 Lever Neutral Error
Indication: “F28” flickering. Attachment 3 operation disabled.
Possible cause: Faulty attachment 3 lever, faulty input unit, faulty harness.
How the error code is triggered: When attachment 3 lever signal voltage is out of range of 0.25V to 4.75V.

F-29 – Joystick Lever Error
Indication: “F29” flickering. Corresponding hydraulic operation disabled.
Possible cause: Faulty FC lever, faulty input unit, faulty harness.
How the error code is triggered: Voltage data between main signal and sub-signal is different when FC lever is not operated.

F-31 – VCM-3 Sensor Voltage Error
Indication: “F31” flickering.
Possible cause: Faulty tire angle sensor, faulty VCM-3, faulty harness.
How the error code is triggered: When VCM-3 sensor power voltage is 3.85V or less.

F-32 – Lift oil pressure sensor error

F-33 – VCM-3OP Lift Oil Pressure Sensor Error
Indication: “F33” flickering. Tilt horizontal function operation disabled.
Possible cause: Faulty lift oil pressure sensor, faulty VCM-3OP, faulty harness.
How the error code is triggered: When lift oil pressure sensor signal voltage is out of range of 0.5V to 4.5V.

F-34 – Forklift Speed Sensor Error
Indication: “F34” flickering. Drive speed change operation disabled.
Possible cause: Faulty vehicle speed sensor, faulty VCM-3, faulty harness.
How the error code is triggered: When vehicle speed sensor signal voltage is out of range of 1.3V to 4.9V.

F-36 – Tire Angle Sensor Error
Indication: “F36” flickering. Knob position control disabled.
Possible cause: Faulty tire angle sensor, faulty VCM-3, faulty harness.
How the error code is triggered: When tire angle sensor signal voltage is out of range of 0.27V to 4.72V.

F-38 – Tilt angle sensor error

F-39 – VCM-3OP Tilt Angle Sensor Error
Indication: “F39” flickering. Tilt auto stop control function operation disabled.
Possible cause: Faulty tilt angle sensor, faulty VCM-3OP, faulty harness.
How the error code is triggered: When tilt angle sensor signal voltage is out of range of 0.1V to 4.9V.

F-40 – Steering Error
Indication: “F40” flickering. Knob position control disabled.
Possible cause: Faulty steering sensor, faulty tire angle sensor, faulty VCM-3, faulty harness.
How the error code is triggered: Steering angle is changed when tire angle remains unchanged. Tire angle is changed when steering angle remains unchanged.

F-41 – Output Unit Error
Indication: “F41” flickering. Hydraulic operations disabled.
Possible cause: Faulty output unit.
How the error code is triggered: Software checks sum value of ROM and EEPROM in CPU, and detects fault.

F-42 – Output Unit Life Control Signal
Indication: “F42” flickering. Hydraulic operations disabled.
Possible cause: Faulty output unit.
How the error code is triggered: When output unit is being initialized.

F-43 – Output Unit Memory Check Error
Indication: “F43” flickering. Hydraulic operations disabled.
Possible cause: Faulty output unit.
How the error code is triggered: Software checks sum value of ROM and EEPROM in CPU, and detects fault.

F-44 – Output Unit PWM Voltage Error
Indication: “F44” flickering. Hydraulic operations disabled.
Possible cause: Poor battery charge, faulty VCM-3, faulty DC-DC converter, faulty harness.
How the error code is triggered: When output unit PWM voltage is 7V or less.

F-45 – Output Unit Communication Error
Indication: “F45” flickering. Hydraulic operations disabled.
Possible cause: Faulty VCM-3, faulty harness, faulty output unit.
How the error code is triggered: When CAN communication from output unit to VCM-3 is interrupted.

F-46 – Input Unit Error
Indication: “F46” flickering. Hydraulic operations disabled.
Possible cause: Faulty input unit.
How the error code is triggered: Software checks sum value of ROM in CPU, and detects fault.

F-47 – Input Unit Life Control Signal
Indication: “F47” flickering. Hydraulic operations disabled.
Possible cause: Faulty input unit.
How the error code is triggered: When input unit is being initialized.

F-48 – Input Unit Memory Check Error
Indication: “F48” flickering. Hydraulic operations disabled.
Possible cause: Faulty input unit.
How the error code is triggered: Software checks sum value of ROM in CPU, and detects fault.

F-49 – Input Unit Communication Error
Indication: “F49” flickering. Hydraulic operations disabled.
Possible cause: Faulty VCM-3, faulty harness, faulty input unit.
How the error code is triggered: When CAN communication from input unit to VCM-3 is interrupted.

F-50 – Lift Up Solenoid Error
Indication: “F50” flickering. Lift operation disabled.
Possible cause: Faulty output unit, faulty lift up solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when lift up solenoid signal is outputted.

F-52 – Lift Down Solenoid Error
Indication: “F52” flickering. Lift operation disabled.
Possible cause: Faulty output unit, faulty lift down solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when lift down solenoid signal is outputted.

F-54 – Lift Solenoid Leak
Indication: “F54” flickering. Hydraulic operations disabled.
Possible cause: Faulty output unit, faulty lift solenoids, faulty harness.
How the error code is triggered: Current is 0.18A or more when lift lever is not operated.

F-55 – Tilt Forward Solenoid Error
Indication: “F55” flickering. Tilt operation disabled.
Possible cause: Faulty output unit, faulty tilt forward solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when tilt forward solenoid signal is outputted.

F-57 – Tilt Backward Solenoid Error
Indication: “F57” flickering. Tilt operation disabled.
Possible cause: Faulty output unit, faulty tilt backward solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when tilt backward solenoid signal is outputted.

F-59 – Tilt Solenoid Leak
Indication: “F59” flickering. Hydraulic operations disabled.
Possible cause: Faulty output unit, faulty tilt solenoids, faulty harness.
How the error code is triggered: Current is 0.18A or more when tilt lever is not operated.

F-60 – Attachment 1A Solenoid Error
Indication: “F60” flickering. Attachment operation disabled.
Possible cause: Faulty output unit, faulty attachment 1A solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when attachment 1A solenoid signal is outputted.

F-62 – Attachment 1B Solenoid Error
Indication: “F62” flickering. Attachment operation disabled.
Possible cause: Faulty output unit, faulty attachment 1B solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when attachment 1B solenoid signal is outputted.

F-64 – Attachment 1 Solenoid Leak
Indication: “F64” flickering. Hydraulic operations disabled.
Possible cause: Faulty output unit, faulty attachment 1 solenoids, faulty harness.
How the error code is triggered: Current is 0.18A or more when attachment 1 lever is not operated.

F-65 – Attachment 2A Solenoid Error
Indication: “F65” flickering. Attachment 2 operation disabled.
Possible cause: Faulty output unit, faulty attachment 2A solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when attachment 2A solenoid signal is outputted.

F-67 – Attachment 2B Solenoid Error
Indication: “F67” flickering. Attachment 2 operation disabled.
Possible cause: Faulty output unit, faulty attachment 2B solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when attachment 2B solenoid signal is outputted.

F-69 – Attachment 2 Solenoid Leak
Indication: “F69” flickering. Hydraulic operations disabled.
Possible cause: Faulty output unit, faulty attachment 2 solenoids, faulty harness.
How the error code is triggered: Current is 0.18A or more when attachment 2 lever is not operated.

F-70 – Attachment 3A Solenoid Error
Indication: “F70” flickering. Attachment 3 operation disabled.
Possible cause: Faulty output unit, faulty attachment 3A solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when attachment 3A solenoid signal is outputted.

F-72 – Attachment 3B Solenoid Error
Indication: “F72” flickering. Attachment 3 operation disabled.
Possible cause: Faulty output unit, faulty attachment 3B solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 1.9A or more, when attachment 3B solenoid signal is outputted.

F-73 – Hour meter gap error

F-74 – Attachment 3 Solenoid Leak
Indication: “F74” flickering. Hydraulic operations disabled.
Possible cause: Faulty output unit, faulty attachment 3 solenoids, faulty harness.
How the error code is triggered: Current is 0.18A or more when attachment 3 lever is not operated.

F-75 – Unload Solenoid Error
Indication: “F75” flickering. Hydraulic operations disabled.
Possible cause: Faulty VCM-3, faulty unload solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 2.4A or more, when unload solenoid signal is outputted.

F-76 – Parking brake solenoid error

F-77 – Lift lock solenoid error

F-78 – Parking brake solenoid leak

F-79 – Unload Solenoid Leak
Indication: “F79” flickering. Drive and hydraulic operations disabled.
Possible cause: Faulty VCM-3, faulty unload solenoid, faulty harness.
How the error code is triggered: Current is 0.18A or more when hydraulic operation signal is not outputted.

F-80 – Knob Position Solenoid Error
Indication: “F80” flickering. Knob position control function disabled.
Possible cause: Faulty VCM-3, faulty knob position solenoid, faulty harness.
How the error code is triggered: Current is 0.16A or less, or 3.54A or more, when knob position solenoid signal is outputted.

F-82 – Tilt lock solenoid error

F-84 – Knob Position Solenoid Leak
Indication: “F84” flickering. Drive and hydraulic operations disabled.
Possible cause: Faulty VCM-3, faulty knob position solenoid, faulty harness.
How the error code is triggered: Current is 0.18A or more when steering wheel is not operated.

F-85 – Transmission Forward Solenoid Error
Indication: “F85” flickering. Drive operations disabled.
Possible cause: Faulty VCM-3, faulty transmission forward solenoid, faulty harness.
How the error code is triggered: Current is 0.25A or less, or 3.84A or more, when transmission forward solenoid signal is outputted.

F-87 – Transmission Backward Solenoid Error
Indication: “F87” flickering. Drive operations disabled.
Possible cause: Faulty VCM-3, faulty transmission backward solenoid, faulty harness.
How the error code is triggered: Current is 0.25A or less, or 3.84A or more, when transmission backward solenoid signal is outputted.

F-88 – Parking brake oil pressure error

F-89 – Transmission Solenoid Leak
Indication: “F89” flickering. Drive and hydraulic operations disabled.
Possible cause: Faulty VCM-3, faulty transmission solenoids, faulty harness.
How the error code is triggered: Current is 0.18A or more when transmission solenoid is in neutral position.

F-90 – VCM-3OP Sensor Voltage Error
Indication: “F90” flickering.
Possible cause: Faulty lift oil pressure/tilt angle sensor, faulty VCM-3OP, faulty harness.
How the error code is triggered: When VCM-3OP sensor 5V power voltage is 3.85V or less.

F-91 – VCM-3OP Memory Check Error
Indication: “F91” flickering. Drive and hydraulic operations disabled.
Possible cause: Faulty VCM-3OP, faulty truck type setting data in VCM-3OP.
How the error code is triggered: Software checks sum value of ROM and EEPROM in CPU, and detects fault.

F-92 – VCM-3OP Battery Voltage Error
Indication: “F92” flickering. Tilt horizontal control and speed change control disabled.
Possible cause: Poor battery charge, faulty battery, faulty VCM-3OP, faulty harness, faulty DC-DC converter.
How the error code is triggered: When VCM-3OP input voltage is less than 7V or more than 21V.

F-93 – VCM-3OP Speed Change Solenoid 1 Error
Indication: “F93” flickering. EAT control function disabled (speed change step fixed).
Possible cause: Faulty VCM-3OP, faulty change transmission solenoid 1, faulty harness.
How the error code is triggered: Current is 0.25A or less, or 3.84A or more, when change transmission solenoid 1 signal is outputted.

F-94 – VCM-3OP Speed Change Solenoid 2 Error
Indication: “F94” flickering. EAT control function disabled (speed change step fixed).
Possible cause: Faulty VCM-3OP, faulty change transmission solenoid 2, faulty harness.
How the error code is triggered: Current is 0.25A or less, or 3.84A or more, when change transmission solenoid 2 signal is outputted.

F-95 – VCM-3OP Speed Change Solenoid Leak
Indication: “F95” flickering. EAT control function disabled.
Possible cause: Faulty VCM-3OP, faulty corresponding solenoid, faulty harness.
How the error code is triggered: Output signal current is 0.18A or more when vehicle is driving at 3rd speed.

F-96 – VCM-3OP EAT Setting Error
Indication: “F96” flickering. Speed change function disabled (speed change step fixed).
Possible cause: Faulty VCM-3OP, faulty truck type setting data in VCM-3OP
How the error code is triggered:
(1) – When setting value of speed shift point is not in following relations.
2- speed specification vehicle: (from 1st-speed to 2nd-speed) (from 2nd-speed to 1st-speed)
3- speed specification vehicle:
(from 1st-speed to 2nd-speed) (from 2nd-speed to 1st-speed)
(from 2nd-speed to 3rd-speed) (from 3rd-speed to 2nd-speed)
(2) – When setting data for mode selecting decision is in following conditions.
– Mode selecting decision value is out of setting range (0 to 3).
– Mode selecting pattern is repeated.
– Either of mode selector switch SW1 and SW2 is not set.
(3) – When setting data for speed change solenoid (SH and S2) is in following conditions.
– Speed change solenoid output decision value is out of setting range (0 to 3).
– Speed change solenoid output pattern is repeated.
– Either of SH and S2 is not set.

F-97 – VCM-3OP Communication Error
Indication: “F97” flickering. Speed change function disabled (current step held).
Possible cause: Faulty VCM-3OP, faulty VCM-3, faulty harness.
How the error code is triggered: When CAN communication from VCM-3OP to VCM-3 is interrupted.

L-03 – VCM3 Communication Error

L-04 – ECM/ECU Communication Error

L-07 – MP Communication Error

L-08 – TMS Communication Error

P-01 – M/P memory check error

P-03 – VCM3 Communication Error

P-04 – ECM/ECU Communication Error

P-05 – DCM communication error

P-07 – MP Communication Error

P-08 – TMS Communication Error

P-22 – Shift Lever Error Signal