YALE FORKLIFTS
YALE & HYSTER - V-engine forklift
Hyster FT series & YALE VX series error codes
| DISPLAY | Description |
| 51-2 | Throttle position sensor signals A and B not tracking correctly |
| 51-7 | Throttle position sensor signals A and B not at commanded value |
| 51-31 | Throttle position sensor signals A and B out of range |
| 91-2 | Sensor signals A and B not tracking correctly |
| 94-0 | Primary fuel pressure higher than expected |
| 94-1 | Primary fuel pressure lower than expected |
| 96-3 | Fuel level sensor signal high |
| 96-4 | Fuel level sensor signal low |
| 100-3 | Engine oli pressure signal high |
| 100-4 | Engine oli pressure signal low |
| 105-3 | Intake air temperature signal high |
| 105-4 | Intake air temperature signal low |
| 106-3 | Mainfold absolute pressure signal high |
| 106-4 | Mainfold absolute pressure signal low |
| 108-1 | Barometric pressure below acceptable limit |
| 110-3 | Coolant temperature signal high |
| 110-4 | Coolant temperature signal low |
| 135-16 | Fuel air pressure minus MAP sensor (GM LPG) or fuel absolute pressure minus MAP sensor signal too high |
| 168-0 | System battery voltage high |
| 168-1 | System battery voltage low |
| 168-4 | System battery voltage too low |
| 177-3 | Transmission oil temperature high |
| 177-4 | Transmission oil temperature low |
| 190-2 | Engine RPM sensor output is less than engine speed |
| 190-4 | CAM sensor pulse without crank pulse |
| 190-7 | Engine speed exceeds command |
| 190-8 | No CAM and Crank sensor synchronization |
| 515-0 | RPM greater than throttle command |
| 521-3 | Brake pedal position sensor signal high |
| 521-4 | Brake pedal position sensor signal low |
| 651-5 | GM gas drive injector 1 open circuit |
| 652-5 | GM gas drive injector 2 open circuit |
| 653-5 | GM gas drive injector 3 open circuit |
| 654-5 | GM gas drive injector 4 open circuit |
| 655-5 | GM gas drive injector 5 open circuit |
| 656-5 | GM gas drive injector 6 open circuit |
| 676-3 | Glow plug relay driver output high |
| 880-4 | Stop lamp driver output - short to ground |
| 1079-31 | 5VE1 &5VE2 simultaneouslu high |
| 1239-7 | Fuel run-out too long |
| 2000-12 | CAN failure, Tx or Rx fault |
| 2000-14 | CAN bus address conflict |
| 2023-12 | CAN bus error with display |
| 2350-3 | Front work lights relay RL4 - driver output high |
| 520260-3 | Electronic pressure regulator signal high |
| 520260-4 | Electronic pressure regulator signal low |
| 522120-1 | Engine RPM higher than transmission limit |
| 522125-8 | Transmission range 1 valve - current out of range (TCU) |
| 522585-2 | Engine RPM sensor (Mazda engine) |
| 522592-0 | EPR pressure greater than commanded |
| 522592-1 | EPR pressure less than commanded |
| 522592-12 | CAN communication loss ECU-EPR |
| 522593-12 | CAN communication loss ECU-EPR |
| 522595-12 | Internal circuity fault |
| 522596-12 | Internal circuity fault |
| 522598-3 | LPG lock-off coil high |
| 522598-3 | LPG lock-off coil low |
| 522603-3 | Fuel or LPG temperature sensor signal high |
| 522603-4 | Fuel or LPG temperature sensor signal low |
| 522604-3 | Fuel run relay control circuit high |
| 522604-4 | Fuel run relay PWM control low |
| 522604-5 | Fuel relay not functioning |
| 522606-10 | O2 sensor voltage fault |
| 522614-7 | Throttle not at limp mode position (GM engines) |
| 522616-8 | Throttle not at command position (GM engines) |
| 522617-5 | Throttle not at fully closed or open position (GM engines) |
| 522631-2 | Pre-cat bank 1 sensor fails to switch to rich |
| 522655-0 | Short term - rich fuel-oxygen mixture engine operation, bank 1 |
| 522655-1 | Short term - lean fuel-oxygen mixture engine operation, bank 1 |
| 522660-0 | Long term - rich fuel-oxygen mixture engine operation, bank 1 |
| 522660-1 | Long term - lean fuel-oxygen mixture engine operation, bank 1 |
| 522697-12 | Internal central processor faults |
| 522710-3 | Throttle position sensor, track A signal high |
| 522710-4 | Throttle position sensor, track A signal low |
| 522711-3 | Throttle position sensor, track B signal high |
| 522711-4 | Throttle position sensor, track B signal low |
| 522712-3 | Accelerator position sensor, track A signal high |
| 522712-4 | Accelerator position sensor, track A signal low |
| 522713-3 | Accelerator position sensor, track B signal high |
| 522713-4 | Accelerator position sensor, track B signal low |
| 522737-10 | Pre catalytic O2 sensor slow response |
| 522752-2 | Crank sensor signal loss |
| 522752-4 | CAM sensor signal loss |
| 522760-3 | Switched battery voltage IGN1 output high |
| 522760-4 | Switched battery voltage IGN1 - short to ground |
| 522762-4 | Switched battery voltage IGN3 - short to ground |
| 522764-6 | Ignition 1 Relay RL6 driver output low |
| 522772-4 | Back up lamp driver output - short to ground |
| 523550-3 | Start relay control output high |
| 523550-4 | Start relay PWM control low |
| 523740-3 | Truck has no forward or reverse motion |
| 523740-4 | Truck has no forward or reverse motion |
| 523767-2 | Display - arrow down button stuck |
| 523769-2 | Display - arrow up button stuck |
| 523780-3 | Park brake posioion sensor signal high |
| 523780-4 | Park brake posioion sensor signal low |
| 523833-3 | Glow plug relay driver output high |
| 523833-4 | Glow plug relay driver output low |
| 523920-3 | Reverse solenoid circuit shorted high |
| 523920-4 | Reverse solenoid circuit shorted low |
| 523930-3 | Forward solenoid circuit shorted high |
| 523930-4 | Forward solenoid circuit shorted low |
| 524195-3 | Cold start relay driver output high |
| 524195-4 | Cold start relay driver output low |
| 524206-2 | Display - rear worklight button stuck |
| 524208-2 | Display - front worklight button stuck |
| 524209-2 | Display - hourmeter button stuck |
| 524223-0 | Transmission reverse pressure greater than commanded |
| 524223-1 | Transmission reverse pressure less than commanded |
| 524223-3 | Transmission reverse pressure high |
| 524223-4 | Transmission reverse pressure low |
| 524224-0 | Transmission forward 2 pressure greater than commanded pressure |
| 524225-0 | Transmission forward pressure greater than commanded |
| 524225-1 | Transmission forward pressure less than commanded |
| 524225-3 | Transmission forward pressure high |
| 524225-4 | Transmission forward pressure low |
| 524227-3 | Manual hydraulic lockout coil voltage high |
| 524227-4 | Manual hydraulic lockout coil voltage low |
| 524230-3 | Rear work lights relay RL7 - driver output high |
| 524230-4 | Rear work lights relay RL7 - driver output low - short |
| 524240-4 | Washer pump drive command - low output or short |
| 524233-14 | Display boost test override |
| 524234-14 | Display internal processing error |
| 524236-xx | Display boost test override |
| 524245-3 | Seat sensor signal high |
| 524245-4 | Seat sensor signal low |
| 524255-3 | Display temperature sensor signal high |
| 524255-4 | Display temperature sensor signal low |
| 524260-1 | 5V supply circuit B - short to ground |
| 524260-3 | 5VE2 sensor supply circuit voltahe high |
| 524260-4 | 5VE2 sensor supply circuit voltahe low |
| 524261-3 | 5VE1 sensor supply circuit voltahe high |
| 524261-4 | 5VE1 sensor supply circuit voltahe low |
| 524263-1 | Uncommanded power down - TCU |
| 524266-31 | Electronic throttle motor short circuit |
| 524269-3 | Transmission enable coil driver output high |
| 524269-4 | Transmission enable coil driver output low |
| 524286-31 | ECU ETP driver component failure |
GE - SCR motor controller
EV-100ZX error codes
| LED display | Description |
| -01 | No seat / deadman switch input |
| -02 | Forward directional switch is closed on initial power up |
| -03 | Forward directional switch is closed on initial power up |
| -04 | Start switch input low after initial start up |
| -05 | Start switch or brake switch fails to close |
| -06 | Accelerator depressed with no direction selected |
| -07 | Accelerator input voltage too high |
| -08 | Accelerator input voltage too low on power up after initial key switch closure |
| -09 | Both forward and reverse directional switches are closed at the same time |
| -11 | Start switch closed on power up after initial key switch closure |
| -15 | Battery volts too low |
| -16 | Battery volts too high |
| -17 | Invalid card type selection |
| -21 | Accelerator input is less than 0.25 volts |
| -23 | Forward and reverse contactor coil current low |
| -24 | T2 voltage low, less than 12% battery volts |
| -25 | 1A contactor does not drop out or drops out slowly |
| -26 | Shorted coil driver for SP or FW contactor |
| -41 | Open thermal protector (TP) or control over temperature |
| -42 | Control motor current sensor input missing - green wire |
| -43 | Control motor current sensor input missing - yellow wire |
| -44 | SCR 1REC did not turn off properly |
| -45 | SCR 1REC did not turn on properly |
| -46 | Look ahead test for T2 volts - greater than 85% of battery volts |
| -47 | SCR 2REC does not turn properly |
| -48 | Look ahead test for T2 volts -Less than 12% of battery volts |
| -49 | SCR 5REC does not turn on properly |
| -50 | Capacitor volts low |
| -51 | Excessive capacitor voltage when motor current is high |
| -52 | Excessive capacitor voltage when motor current is low |
| -53 | SCR 1 REC fails to turn off during plug cycle |
| -54 | Shorted F, R or 1A contactor coil driver |
| -57 | Current sensor input voltage polarity check |
| -70 | Regen current sensor input missing - yellow wire |
| -71 | Regen current sensor input missing - green wire |
| -72 | Regen contactor does not pick up |
| -73 | Regen contactor does not drop out or drops out slowly |
| -74 | Regen contactor picks up too slow |
| -75 | SCR 1REC fails to turn off during Regen |
| -76 | Capacitor overvoltage during Regen |
| -90 | User defined status code, terminal 1 shorted to negative |
| -91 | User defined status code, terminal 3 shorted to negative |
| -92 | User defined status code, terminal 4 shorted to negative |
| -93 | User defined status code, terminal 5 and 6 shorted to negative |
| -94 | User defined status code, terminal 8 and 10 shorted to negative |
| -95 | User defined status code, terminal 11 and 12 shorted to negative |
| -99 | Maintenence Alert Code |
| -117 | Invalid pump card type selection |
| -123 | Defective Pump contactor coil circuit |
| -124 | Pump T2 voltage low - greater than 12% battery volts |
| -125 | Pump 1A contactor does not drop out or drops out slowly |
| -141 | Open pump thermal protector (TP) or pump control over temperature |
| -142 | Control pump motor current sensor input missing - green wire |
| -143 | Control pump motor current sensor input missing - yellow wire |
| -144 | Pump SCR 1REC did not turn off properly |
| -145 | Pump SCR 1REC did not turn on properly |
| -146 | Look ahead test for pump T2 volts - greater than 85% of battery volts |
| -147 | Pump SCR 2REC does not turn properly |
| -148 | Look ahead test for pump T2 volts -Less than 12% of battery volts |
| -149 | Pump SCR 5REC does not turn on properly |
| -150 | Pump controller capacitor volts low |
| -151 | Excessive pump capacitor voltage when motor current is high |
| -152 | Excessive pump capacitor voltage when motor current is low |
| -154 | Shorted pump 1A contactor coil driver |
| -157 | Pump current sensor input voltage polarity check |