Troubleshooting
Warning and error codes
Publication No. Date Valid from serial number T-code
261828-040 2008-08-21 6051502 815, 816
© BT Repair Manual RRE140/160/180/200/250 7 – 31
4:273 Error on MCU output signal
4.
Interrupted circuit in output signal for mast retraction valve.
Reach movement deacti-
vated
Check the magnetic coil, electrical supply, contacts and wir-
ing harness. Check the output signal (X131:13).
4:280 Analogue signal 1 error. Lift/lowering lever voltage outside the permitted range 0.3–
4.7 V.
Lift/lowering deactivated. Check the wiring harness in the control panel. Replace the
lever.
Check input signal X505:2.
4:281 Analogue signal 2 error. Reach mast lever voltage outside the permitted range 0.3–
4.7 V.
Reach mast deactivated. Check the wiring harness in the control panel. Replace the
lever.
Check input signal X505:11.
4:282 Analogue signal 3 error. Aux 1 lever voltage outside the permitted range 0.3–4.7 V.
Aux 1 lever deactivated. Check the wiring harness in the control panel. Replace the
lever.
Check input signal X505:17.
4:283 Analogue signal 4 error. Aux 2 lever voltage outside the permitted range 0.3–4.7 V.
Aux 2 lever deactivated. Check the wiring harness in the control panel. Replace the
lever.
Check input signal X505:3.
4:284 Analogue signal 5 error. Aux 3 lever voltage outside the permitted range 0.3–4.7 V.
Aux 3 lever deactivated. Check the wiring harness in the control panel. Replace the
lever.
Check input signal X505:12.
4:285 Speed sensor error Interrupted circuit/short circuit in the speed sensor.
All hydraulic functions
deactivated.
Check the wiring harness to sensor B11.
Check sensor B11.
4:286 Fork tilt sensor error The sensor signal is outside the permitted range, 0.3–4.7 V.
All hydraulic functions
deactivated.
Check the sensor and wiring harness to the sensor.
4:287 Sideshift sensor error Both sensor signals are absent.
All hydraulic functions
deactivated.
Check the sensors and wiring harness to the sensors.
4:520 Start-up error
4:561 Error on the free lowering
valve.
Interrupted circuit in output signal for the free lowering
valve.
Check the magnetic coil, electrical supply, contacts and wir-
ing harness. Check the output signal (K1:2).
Code Name Description/possible causes
Event Action
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