KALMAR Forklift Truck Error Codes
KALMAR Forklift Trucks Fault Codes DTC list
KALMAR Error codes DTC Control unit EDU 795 (KCS display)
Code Description - Action
1 Time for service interval has been exceeded. INFORMATION
10 Communication error ECU 790. Impossible to continue operation. STOP!
11 Communication, defective cable ECU 790 - EDU 795. Impossible to continue operation. WARNING!
12 Communication error ECU 793. STOP!
13 Communication error ECU 794. STOP!
14 Communication ECU 796, no reply. STOP!
15 Communication, defective cable ECU 795 - ECU 796. WARNING!
16 Communication, defective cable ECU 796 - ECU 790. WARNING!
17 Memory error, check sum EDU 795. Impossible to continue operation, display not functioning. WARNING!
18 Communication ECU 792, no reply. STOP!
KALMAR Error codes control unit ECU 790
Code Description - Action
301 Power supply error ECU 790. Reduction of engine rpm. STOP: Check fuses according to the Operator’s manual, and the battery voltage and acidity. Contact service if the fault remains.
303 Reference voltage error, 5V, ECU 790. Reduction of engine rpm. STOP!
304 Sensor malfunction for electric scales. WARNING!
305 Speed sensor malfunction. Reduction of engine rpm. STOP!
306 Engine rpm sensor malfunction. Reduction of engine rpm. STOP!
307 Gear selector malfunction. Reduction of engine rpm. STOP!
320 Sensor malfunction hydrostatic operating pressure (forward). Reduction of engine rpm. STOP!
321 Sensor malfunction hydrostatic operating pressure (reverse). Reduction of engine rpm. STOP!
322 Malfunction of lift lever’s hydraulic pressure sensor. Engine rpm does not increase when using lift lever. WARNING!
323 Short-circuit or open circuit, output signal EDC valve pump (forward). Reduction of engine rpm. STOP!
324 Short-circuit or open circuit, output signal EDC valve pump (reverse). Reduction of engine rpm. STOP!
325 Short-circuit or open circuit, output signal PDC valve hydraulic motor. Reduction of engine rpm. STOP!
350 Battery voltage low. WARNING!
351 Battery voltage high. WARNING!
352 Fuel level low. Possible to continue operation. INFORMATION! Fill with fuel.
353 Sensor malfunction fuel level. Possible to continue operation. INFORMATION!
354 Coolant level low. Reduction of engine rpm. STOP! Fill with coolant.
355 Hydraulic oil temperature high. WARNING! Do not use hydraulic functions until the hydraulic oil temperature falls below 70°C. Contact service if the fault remains.
356 Sensor error, hydraulic oil temperature. Possible to continue operation. INFORMATION!
357 Brake system, accumulator pressure low. Reduction of engine rpm. STOP! The pressure in the accumulator,
that is, the brake pressure is too low and the service brake capacity is limited. Check the accumulators’ sealing if the pressure does not build up and is not maintained, see chapter 6 Inspection and maintenance. Contact service.
370 Particle filter engine. Clean within 30 minutes. INFORMATION! Clean particle filter within 30 minutes. See separate manual for particle filter.
371 Particle filter engine. Clean immediately. Reduction of engine rpm. STOP! Clean particle filter. See separate manual for particle filter.
372 Particle filter engine. High pressure. Reduction of engine rpm. STOP! Clean particle filter. See
section 5.4.9 Stopping machine -
parking or see separate manual
for particle filter.
380 Error, accelerator pedal (Left Front). Reduction of engine rpm. STOP!
381 Error, accelerator pedal (Right Front). Reduction of engine rpm. STOP!
382 Error, accelerator pedal LR (Left Rear). Reduction of engine rpm. STOP!
383 Error, accelerator pedal RR (Right Rear). Reduction of engine rpm. STOP!
384 Error, servo motor for injector pump engine. Reduction of engine rpm. STOP!
390 Error on valve for variable pump for Optimum speed/Optimum rev, shortcircuit or open circuit at terminal. WARNING!
400 Reversible driver’s seat. Defective sensor. Only forward operation is possible. WARNING! Stop the machine. Turn the driver’s seat to position for forward operation. Contact service.
401 Overload lift and tilt. Reduction of speed. WARNING!
402 Parking brake error. The parking brake cannot be released. STOP!
404 Defective coolant level sensor. WARNING!
405 Defective position sensor for seat reversing. Limitation of function. WARNING!
406 Signal error from power cell stub axle or tilt cylinder Overload protection does not work. WARNING!
KALMAR Error codes control unit ECU 796
601 Voltage feed error, ECU 796. STOP!
602 Memory error, check sum ECU 796. STOP! Restart ECU 796 by switching the ignition off and on, load the program. Contact service if the fault remains.
603 Reference voltage 10 V error, ECU 796. STOP!
604 Voltage feed error PWM outputs, ECU 796. Hydraulics not functioning. INFORMATION! Turn off the hydraulic
functions. For electric servo, check if the breaker switch for load handling is pressed down.
605 Communication error XA-PWM, K2. Hydraulic functions not functioning. INFORMATION! Restart ECU 796
by switching the ignition on and off. Contact service if the fault remains.
606 Communication error XA-PWM, K3. Hydraulic functions not functioning. INFORMATION! Restart ECU 796 by switching the ignition on and off. Contact service if the fault remains.
610 Input signal from lever for hydraulic function 1 error. Hydraulic function 1 not functioning. INFORMATION! Do not use hydraulic function 1.
611 Input signal from lever for hydraulic function 2 error. Hydraulic function 2 not functioning. INFORMATION! Do not use hydraulicfunction 2.
612 Input signal from lever for hydraulic function 3 error. Hydraulic function 3 not functioning. INFORMATION! Do not use hydraulic function 3.
613 Input signal from lever for hydraulic function 4 error. Hydraulic function 4 not functioning. INFORMATION! Do not use hydraulic function 4.
614 Input signal from lever for hydraulic function 5 error. Hydraulic function 5 not functioning. INFORMATION! Do not use hydraulic function 5.
615 Short-circuit or open-circuit for steering valve hydraulic function 1A at terminal K2:3. Hydraulic function 1 not functioning. INFORMATION! Do not use hydraulic function 1.
616 Short-circuit or open-circuit for steering valve hydraulic function 1B at terminal K2:4. Hydraulic function 1 not functioning. INFORMATION! Do not use hydraulic function 1.
617 Short-circuit or open-circuit for steering valve hydraulic function 2A at terminal K2:5. Hydraulic function 2 not functioning. INFORMATION! Do not use hydraulic function 2.
618 Short-circuit or open-circuit for steering valve hydraulic function 2B at terminal K2:6. Hydraulic function 2 not functioning. INFORMATION! Do not use hydraulic function 2.
619 Short-circuit or open-circuit for steering valve hydraulic function 3A at terminal K2:7. Hydraulic function 3 not functioning. INFORMATION! Do not use hydraulic function 3.
620 Short-circuit or open-circuit for steering valve hydraulic function 3B at terminal K2:8. Hydraulic function 3 not functioning. INFORMATION! Do not use hydraulic function 3.
621 Short-circuit or open-circuit for steering valve hydraulic function 4A at terminal K2:11. Hydraulic function 4 not functioning. INFORMATION! Do not use hydraulic function 4.
622 Short-circuit or open-circuit for steering valve hydraulic function 4B at terminal K2:12. Hydraulic function 4 not functioning. INFORMATION! Do not use hydraulic function 4.
623 Short-circuit or open-circuit for steering valve hydraulic function 5A at terminal K2:13. Hydraulic function 5 not functioning. INFORMATION! Do not use hydraulic function 5.
624 Short-circuit or open-circuit for steering valve hydraulic function 5B at terminal K2:14. Hydraulic function 5 not functioning. INFORMATION! Do not use hydraulic function 5.
626 Sensor error for vertical hold. Vertical hold not functioning. INFORMATION: Turn off vertical hold.
627 Sensor error for pre-selected lift height. Lifting height pre-selection not functioning. INFORMATION! Switch off lifting height pre-selection.
628 CTX communication error. Clamping control not responding. Only manual clamping function possible. WARNING! CTX clamping unit not functioning. Select manual clamping control.
630 Defective pressure sensor P1, Clamping attachment. The selected attachment pressure is approximate. WARNING! No automatic pressure increase if the attachment pressure drops.
WARNING! No automatic pressure increase if the attachment pressure drops.
631 Defective pressure sensor P2, Clamping attachment. The selected attachment
pressure is approximate. WARNING! No automatic pressure increase if the attachment pressure drops.
WARNING! No automatic pressure increase if the attachment pressure drops. Contact service.
632 Short-circuit or open circuit in hydraulic function steering valve at terminal
K3:3. Hydraulic function clamping attachment not working.
WARNING! Do not use hydraulic function clamping attachment.
633 Short-circuit or open circuit for steering valve attachment pressure ON/ OFF. Hydraulic function clamping attachment not working.
WARNING! Do not use hydraulic function clamping attachment.
634 Short-circuit or open circuit for steering valve left arm ON/OFF. Hydraulic function left arm not working.
WARNING! Do not use hydraulic function left arm.
635 Short-circuit or open circuit for steering valve right arm ON/OFF. Hydraulic function right arm not working.
WARNING! Do not use hydraulic function right arm.
636 Short-circuit or open circuit for steering valve upper left arm ON/OFF. Hydraulic function upper left arm not working.
WARNING! Do not use hydraulic function upper left arm.
637 Short-circuit or open circuit for steering valve middle right arm ON/OFF. Hydraulic function middle right arm not working.
WARNING! Do not use hydraulic function right arm.
638 Short-circuit or open circuit for steering valve middle left arm ON/OFF. Hydraulic function middle left arm not working.
WARNING! Do not use hydraulic function left arm.
639 Short-circuit or open circuit for steering valve upper right arm ON/OFF. Hydraulic function upper right arm not working.
WARNING! Do not use hydraulic function upper right arm.
642 Pressure sensor clamping attachment opening, defective. Hydraulic function clamping attachment not working.
WARNING! Do not use hydraulic function clamping attachment.
643 Pressure sensor clamping attachment closing, defective. Hydraulic function clamping attachment not working.
WARNING! Do not use hydraulic function clamping attachment.
644 Breaker right/left arm defective. Do not use shut-off right/left arm. WARNING! Shut-off right/left arm not working.
645 Max. load exceeded. Max. speed 1 km/h. WARNING! Lower the load.
646 Upper left by-pass valve on clamping attachment not working. Hydraulic function clamping attachment left-hand side not working. WARNING!
647 Middle left by-pass valve on clamping attachment not working. Hydraulic function clamping attachment left-hand side not working. WARNING!
648 Left sequence valve on clamping attachment not working. Hydraulic function clamping attachment left-hand side not working. WARNING!
650 Upper right by-pass valve on clamping attachment not working. Hydraulic function clamping attachment right-hand side not working. WARNING!
651 Middle right by-pass valve on clamping attachment not working. Hydraulic function clamping attachment right-hand side not working. WARNING!
652 Right sequence valve on clamping attachment not working. Hydraulic function clamping attachment right-hand side not working. WARNING!
654 Pressure sensor P3 left long arm on clamping attachment defective. Hydraulic function clamping attachment left-hand side not working. WARNING!
655 Pressure sensor P3 left short arm on clamping attachment defective. Hydraulic function clamping attachment left-hand side not working. WARNING!
656 Pressure sensor P3 right long arm on clamping attachment defective. Hydraulic function clamping attachment right-hand side not working. WARNING!
657 Pressure sensor P3 right short arm on clamping attachment defective. Hydraulic function clamping attachment right-hand side not working. WARNING!
658 Fault in switch for selecting clamping pressure. Clamping pressure one is selected. WARNING!
659 Pressure sensor P1 left arm on clamping attachment defective. No automatic increment of the clamping pressure. WARNING!
660 Pressure sensor P2 left arm on clamping attachment defective. No automatic increment of the clamping pressure. WARNING!
661 Pressure sensor P1 right arm on clamping attachment defective. No automatic increment of the clamping pressure. WARNING!
662 Pressure sensor P3 right arm on clamping attachment defective. No automatic increment of the clamping pressure. WARNING!
900 Error code from control unit transmission. WARNING! See Error codes transmission page 130.
1200 Error code from control unit engine. WARNING!
KALMAR Error codes control unit ECU 792
1501 Sensor error, steering with feedback. Alternative steering switches off automatically. STOP! Use standard steering.
1502 Joystick error. Alternative steering switches off automatically. STOP! Use standard steering.
1503 Mini-wheel potentiometer error. Alternative steering switches off automatically. STOP! Use standard steering.
1504 Short-circuit or open circuit, output signal for right steering valve. Alternative steering switches off automatically. STOP! Use standard steering.
1505 Short-circuit or open circuit on output signal for left steering valve. Alternative steering switches off automatically. STOP! Use standard steering.
1506 Power supply error, ECU 792. Reduction of engine rpm. STOP! Check fuses according to the Operator’s manual. Contact service if the fault remains.
1507 Reference voltage error 5V, ECU 792. Reduction of engine rpm. STOP!