Toyota Forklift: Error Codes & Solutions

Summary

Toyota forklifts are very reliable, but error codes can still occur in everyday use. In our guide, you'll learn what these codes mean, how to correctly read them, and what immediate measures are advisable. These include turning off the engine, restarting the forklift, and performing a quick safety check of the most important systems. One thing is clear:Never continue working with an active error code– only after the problem has been resolved or approved by the service team can you continue safely.

The tables provide a comprehensive overview of all relevant categories, from 4Y engines and diesel common rail to electric forklifts, hydraulics, SAS systems, and chargers. For each code, you'll receive practical advice for the initial check. This allows you to quickly decide whether simple checks like cable or sensor testing are sufficient or whether Toyota Service should be called in.

Toyota forklifts are considered extremely reliable—which is precisely why we like to use them in our rental business. Nevertheless, error messages can occur in the rigors of everyday life. With the right approach, you can resolve most issues quickly, safely, and without subsequent damage.

Here you'll learn what Toyota forklift error codes mean, how to systematically check them, and when you should call for service. All the tables below will help you quickly identify codes – ideal for workshops, warehouses, and shift work. The style and structure are based on our proven BIBERGER practical guides.

What are error codes – and why are they helpful?

Error codes are diagnostic clues from the vehicle's control system. They show you which component or sensor is faulty and where to start your investigation. This saves time and prevents parts from being replaced on suspicion.

Important: A code is not a judgment, but an indication . Only after a visual inspection, measurements, and a brief functional test can you make the right decision.

How to deal with Toyota error codes correctly

Basic principle: first secure, then systematically check

Secure : Cordon off the area, secure the forklift against rolling away, put the load down.
Read : Note down the code, document the display or symbol with the time.
Identify : Check the affected assembly, cables, connectors, fuses.
Testing : Test the repair, check the error log again.
Decide : Release the device or request service. This clear sequence is standard in our operations and training courses.

First steps in case of error codes

Turn off the engine immediately if an error code or wrench symbol appears.
Restart the forklift – many codes can be reset by a controlled restart .
Perform safety check – check SAS, emergency stop, seat/safety switches.
If the fault persists, contact a Toyota service technician or our service department.

Safety instructions

Never continue working with an active error code.
If you have unknown codes, always call customer service .
Only put the forklift back into operation after the fault has been rectified. Safety first.

Error codes: Overview and practical “first aid”

The tables are sorted by components/categories . The "First Aid/Check" column describes quick checks you can safely perform yourself. If in doubt, contact service.

4Y Engine – ECS Basics

code	Description	First Aid/Examination	category
E01-1	Fuel feedback control error (gasoline) rich	Fuel mixture too rich - check fuel system, check O2 sensor	4Y Motor ECS Basics
E01-2	Fuel feedback control error (gasoline) lean	Fuel mixture too lean - check fuel system, check O2 sensor	4Y Motor ECS Basics
E01-3	Fuel feedback control error (LPG) rich	LPG mixture too rich - check gas system, correct settings	4Y Motor ECS Basics
E01-4	Fuel feedback control error (LPG) lean	LPG mixture too lean - check gas system, correct settings	4Y Motor ECS Basics
E01-5	O2 sensor circuit open abnormality	O2 sensor circuit open - check wiring and sensor	4Y Motor ECS Basics
E01-6	O2 sensor heater circuit open abnormality	O2 sensor heating circuit open - check wiring and heating element	4Y Motor ECS Basics
E02-1	Intake air temperature sensor circuit open abnormality (High input)	Intake air temperature sensor open - check sensor and wiring	4Y Motor ECS Basics
E02-2	Intake air temperature sensor circuit short abnormality (Low input)	Intake air temperature sensor short circuit - check sensor and wiring	4Y Motor ECS Basics
E03-1	Intake air pressure sensor circuit open abnormality (High input)	Intake air pressure sensor open - check sensor and wiring	4Y Motor ECS Basics
E03-2	Intake air pressure sensor circuit short abnormality (Low input)	Intake air pressure sensor short circuit - check sensor and wiring	4Y Motor ECS Basics
E04-1	Coolant temperature sensor circuit open abnormality (High input)	Coolant temperature sensor open - check sensor and wiring	4Y Motor ECS Basics
E04-2	Coolant temperature sensor circuit short abnormality (Low input)	Coolant temperature sensor short circuit - check sensor and wiring	4Y Motor ECS Basics
E04-3	Coolant temperature sensor circuit malfunction	Coolant temperature sensor malfunction - replace sensor	4Y Motor ECS Basics
E05-1	Throttle position sensor 1 open abnormality	Throttle Position Sensor 1 Open - Check/Replace Sensor	4Y Motor ECS Basics
E05-2	Throttle position sensor 1 short abnormality	Throttle position sensor 1 short circuit - check/replace sensor	4Y Motor ECS Basics
E05-3	Throttle position sensor 2 open abnormality	Throttle Position Sensor 2 Open - Check/Replace Sensor	4Y Motor ECS Basics
E05-4	Throttle position sensor 2 short abnormality	Throttle position sensor 2 short circuit - check/replace sensor	4Y Motor ECS Basics
E05-5	Throttle position sensor offset abnormality	Throttle Position Sensor Offset Error - Calibration Required	4Y Motor ECS Basics
E05-6	Throttle position sensor out of range error	Throttle position sensor out of range - Calibrate/replace sensor	4Y Motor ECS Basics

BT Electric Forklifts – Extended

code	Description	First Aid/Examination	category
2,001	The emergency stop switch has been activated	The forklift stops - reset the emergency stop switch	BT Electric Forklift Extended
2,003	Service is required	Cause is displayed - call customer service technician	BT Electric Forklift Extended
3,001	Cruise control not in neutral position when switching on	The forklift cannot be driven - set the controller to neutral	BT Electric Forklift Extended
3,002	Engine temperature > +150 °C	Reduced performance - let the forklift cool down	BT Electric Forklift Extended
3,003	Engine control temperature > +85 °C	Reduced performance - let the forklift cool down	BT Electric Forklift Extended
3,080	Incorrect values from the temperature sensors	Reduced performance - have temperature sensors checked	BT Electric Forklift Extended
3,081	Incorrect values from the temperature sensors	Reduced performance - have temperature sensors checked	BT Electric Forklift Extended
3,521	Low motor voltage	Forklift stops - check battery and wiring	BT Electric Forklift Extended
3,522	High motor voltage	Forklift stops - call customer service technician	BT Electric Forklift Extended
4,001	Lift/lower control not in neutral position at start	Function deactivated - set controller to neutral position	BT Electric Forklift Extended

BT Electric Forklift – Standard

code	Description	First Aid/Examination	category
1:503, 2:504	Unclear status of the emergency stop switch	Restart forklift	BT Electric Forklift Standard
2:005	Maintenance is due	Contact Support	BT Electric Forklift Standard
2:102	Lifting height limitation/height preselection error	Be careful when lifting and lowering	BT Electric Forklift Standard
2:106	Collision sensor has been activated	Forklift drives at reduced speed	BT Electric Forklift Standard
2:180	No contact with the collision sensor	Forklift drives at reduced speed	BT Electric Forklift Standard
2:420	Battery voltage too low	Check cables and battery for faults	BT Electric Forklift Standard
2:421	Battery voltage too high	Check cables and battery for faults	BT Electric Forklift Standard
2:507	Forklift not functional	Contact Support	BT Electric Forklift Standard
3:080	Safety pedal defective. Signal after 20 minutes of inactivity	Make sure the pedal has not been blocked or tampered with	BT Electric Forklift Standard
3:081	Seat switch defective. Signal after 20 minutes of inactivity	Make sure the seat switch is not jammed	BT Electric Forklift Standard
3:305, 3:325, 4:205, 4:225, 5:035, 5:326	Overtemperature	Allow the forklift to cool down. If the error persists, contact support.	BT Electric Forklift Standard
4:180, 4:181, 4:182, 4:183	Altitude sensor error	Check if the charge exceeds the capacity. Contact support if problems occur.	BT Electric Forklift Standard
4:185, 4:186, 4:187	Incorrect height measurement	Raise and lower forks. Contact support if you have any problems.	BT Electric Forklift Standard
4:188	Cabin tilt function defective	Contact Support	BT Electric Forklift Standard

BT warning codes

code	Description	First Aid/Examination	category
C19	Parameter values not OK. Default values entered	Call customer service technician	BT warning codes
C20	Speed control not in zero position when switched on	Set the controller to zero	BT warning codes
C28	Emergency stop switch has been activated	Release emergency stop switch	BT warning codes
C29	Maintenance due	Call customer service technician	BT warning codes
C3	Safety speed – collision sensor impact detected	Check collision sensor, remove obstacles	BT warning codes
C41	Battery voltage too low	Charge battery	BT warning codes
C42	Battery voltage too high	Call customer service technician	BT warning codes
C43	High temperature in the transistor panel	Leave the forklift standing, restart later	BT warning codes

Diesel engine (Common Rail)

code	Description	First Aid/Examination	category
E1B-1	Common rail pressure sensor circuit open abnormality (High input)	Common rail pressure sensor open - check sensor and wiring	Diesel engine (Common Rail)
E1B-2	Common rail pressure sensor circuit short abnormality (Low input)	Common rail pressure sensor short circuit - check sensor and wiring	Diesel engine (Common Rail)
E1B-3	Common rail pressure sensor circuit malfunction	Common rail pressure sensor malfunction - replace sensor	Diesel engine (Common Rail)
E1B-4	Common rail pressure sensor circuit malfunction	Common rail pressure sensor malfunction - replace sensor	Diesel engine (Common Rail)
E1C-1	Common rail pressure too high	CR pressure too high - check pressure regulator valve, check fuel system	Diesel engine (Common Rail)
E1C-2	Fuel large leakage detected	Large fuel leak - check lines and injectors	Diesel engine (Common Rail)
E1C-3	Supply pump control circuit malfunction	Check feed pump control circuit	Diesel engine (Common Rail)
E1C-4	Supply pump malfunction	Check/replace feed pump	Diesel engine (Common Rail)
E1D-1	EDU all malfunction	Check all injection valve control units	Diesel engine (Common Rail)
E1D-2	Injector EDU #1 malfunction	Check/replace EDU #1	Diesel engine (Common Rail)
E1D-3	Injector EDU #2/#3 malfunction	Check/replace corresponding EDU	Diesel engine (Common Rail)
E1D-4	Injector EDU #3 malfunction	Check/replace EDU #3	Diesel engine (Common Rail)

Throttle/Fuel (Gasoline/LPG)

code	Description	First Aid/Examination	category
E06-1	Throttle motor drive circuit open abnormality	Check wiring	Throttle/Fuel
E06-2	Throttle motor drive circuit short abnormality	Check wiring	Throttle/Fuel
E06-3	Throttle motor power supply circuit open abnormality	Check power supply	Throttle/Fuel
E06-4	Throttle motor power supply circuit short abnormality	Check power supply	Throttle/Fuel
E06-5	Throttle engine seizing abnormality	Check/replace motor	Throttle/Fuel
E06-6	Electronic throttle circuit malfunction	Check/reset system	Throttle/Fuel
E07-1	Fuel control module circuit open abnormality	Check wiring	Throttle/Fuel
E08-1	Low voltage (battery line open) error	Check battery and wiring	Throttle/Fuel
E09-1	Ignition signal error	Check ignition system	Throttle/Fuel
E0A-1	Fuel specification determination signal error	Check fuel switchover	Throttle/Fuel
E0A-2	Fuel specification changeover switch abnormality	Check/replace switch	Throttle/Fuel
E0A-3	Fuel specification type mismatch	Check settings	Throttle/Fuel
E0A-4	Engine specification determination error	Check ECU parameters	Throttle/Fuel

Electric Forklift – Advanced (Control/Power)

code	Description	First Aid/Examination	category
E101	Hardware error	Check control unit, try restarting	Electric Forklift Extended
E104	Hardware error	Check control unit, try restarting	Electric Forklift Extended
E106	Too high current on digital output or field current	Check wiring for short circuits, reduce load	Electric Forklift Extended
E115	Main contactor fault	Check main contactor/coil, check wiring	Electric Forklift Extended
E152	Battery/communication problems (controller/handle)	Check battery connections and CAN bus	Electric Forklift Extended
E161	Power amplifier issue (lower valve detection)	Check hydraulic valves and amplifiers	Electric Forklift Extended

Electric forklifts – Common practice codes

code	Description	First Aid/Examination	category
AD-8	CAN communication SAS/OPS data reception error	Check SAS/OPS cabling and CAN	Electric forklifts frequently
C-1	Current sensor drive defective	Locate and check the current sensor on the chassis	Electric forklifts frequently
C-14	Arm angle reference warning	Check tilt sensor, perform calibration	Electric forklifts frequently
E-107	Main contactor off error	Check main contactor (coil resistance approx. 39 ohms), check wiring	Electric forklifts frequently
E-150	Drive communication error	Check CAN bus wiring/connector	Electric forklifts frequently
E-250	Charger in sleep mode / Battery problems	Plug in charger (a few minutes), check battery connections	Electric forklifts frequently

Hydraulic system

code	Description	First Aid/Examination	category
E61-1	Load sensor open abnormality	Load sensor open - check sensor/wiring	Hydraulic system
E61-2	Load sensor VCC short abnormality	Load sensor power supply short circuit - check wiring	Hydraulic system
E62-1	Tilt angle sensor open abnormality	Tilt angle sensor open - check sensor/wiring	Hydraulic system
E62-2	Tilt angle sensor VCC short abnormality	Tilt angle sensor VCC short circuit - check wiring	Hydraulic system
E64-1	Lift lower lock solenoid open circuit or load short	Check coil and wiring	Hydraulic system
E64-2	Lift solenoid: Short circuit	Check/replace coil	Hydraulic system
E65-1	Tilt control solenoid open circuit or load short	Check coil and wiring	Hydraulic system
E65-2	Tilt solenoid: Short circuit	Check/replace coil	Hydraulic system

Charger error codes (integrated chargers)

code	Description	First Aid/Examination	category
8,010	Communication problems with integrated charger (start)	Check wiring	Charger error codes
8,011	No communication handle ↔ charger	Check wiring	Charger error codes
8,014	No communication handle ↔ charger	Check wiring	Charger error codes
8,020	Battery not connected to integrated charger	Check battery connection	Charger error codes
8,021	Low battery voltage	Check/replace battery	Charger error codes
8,022	High battery voltage	Call customer service technician	Charger error codes
8,023	Low charging temperature	Increase temperature	Charger error codes
8,024	High charging temperature	Let cool	Charger error codes
8,027	Serious error in the integrated charger	Replace charger	Charger error codes
8,028	Loading time exceeded	Reset charging process	Charger error codes
8,029	Overcharging above the permissible Ah value	Check battery	Charger error codes
8,030	Charger installed, no parameter selected	Set parameters	Charger error codes
8,031	Incorrect parameter selection battery	Correct parameters	Charger error codes

Engine sensors

code	Description	First Aid/Examination	category
E18-1	NE sensor / crankshaft sensor malfunction	Check sensor and wiring	Engine sensors
E18-2	NE sensor open at start	Check/replace sensor	Engine sensors
E18-3	G2 / Camshaft sensor malfunction	Check/replace sensor	Engine sensors
E19-1	Starter signal circuit malfunction	Check starter relay and wiring	Engine sensors

SAS system (stability/steering)

code	Description	First Aid/Examination	category
E51-1	Speed sensor open abnormality	Check sensor/wiring	SAS system
E52-1	Yaw rate sensor open abnormality	Check sensor/wiring	SAS system
E54-1	Swing lock solenoid open / load short	Check coil/wiring	SAS system
E71-1	Tire angle sensor open abnormality	Check sensor/wiring	SAS system
E72-1	Steering wheel angle sensor SS1 open	Check/replace sensor	SAS system
E73-1	Knob position compensation solenoid open	Check valve/wiring	SAS system

System/Controller (ECU, voltages)

code	Description	First Aid/Examination	category
E1F-1	Controller malfunction / CPU error (ASC)	Check/replace ECU, check wiring	System/Controller
E1F-2	Controller CPU malfunction	Replace ECU	System/Controller
E1F-4	Controller circuit malfunction	Check wiring	System/Controller
E1F-5	EEPROM injector correction malfunction	Program/replace ECU	System/Controller
E30-1	DCR_LH: Low voltage	Check battery/wiring	System/Controller
E30-2	DCR_RH: Low voltage	Check battery/wiring	System/Controller
E30-3	PCR: Low voltage	Check battery/wiring	System/Controller

When should you check it yourself – and when should you call for service?

Check yourself: Visually inspect the connectors, fuses, battery terminals, and any obvious cable breaks. A controlled restart is also acceptable.

Call Service for recurring errors, safety-relevant systems (SAS, brakes, lift hydraulics), high-voltage, common-rail injection, and all codes with an unknown cause. This is in line with our "Safety Before Speed" policy.

Practical tips from renting

Document the code, time, operating conditions, and recent work on the vehicle. This will significantly speed up the diagnosis.

Keep standard spare parts on hand: fuses, relays, fleet-standard O2/temp sensors, and common connectors. This will reduce downtime.

24/7 service and support

For our tenants: 24/7 service hotline – we are available for you around the clock.

We also provide maintenance and repairs for third-party devices. Just give us a call – we'll take care of it.

About the author

Martin Biberger

Managing Director

Martin is the founder and managing director of BIBERGER Arbeitsbühnen & Forklifts.

He is responsible for thetechnical areaTogether with his team, he is responsible for thetechnical purchasingthe machines thatFurther development of the machine inventoryand the smooth operation of over 1,500 BIBERGER rental devices.

From many years of experience he knows theStrengths and weaknesses of all device classes, the possibleAreas of applicationand thetechnical possibilities– always with a view to theDevelopment of the entire industryand future innovations.

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