Jungheinrich Error Code 1901 !!better!! May 2026

| Sub-Code | Meaning | | :--- | :--- | | | Signal voltage too low (sensor short to ground) | | 1901-2 | Signal voltage too high (sensor open circuit or broken wire) |

18;write_to_target_document7;default0;255;18;write_to_target_document1a;_GxjuaaCCDKeP8L0P1LrdkAo_20;a5; 0;7a;0;a5; Quick Troubleshooting Steps 0;16; Jungheinrich Error Code 1901

Now, it sat motionless, its orange warning light strobing violently against the racking. Perched precariously on the forks, three feet in the air, was a pallet of temperature-sensitive pharmaceuticals. | Sub-Code | Meaning | | :--- |

Expected values (NTC thermistor):

Two minutes later, Ray was on his back on the cold concrete. With surgical precision, he cut away the constricting zip ties. He peeled back the insulation, wrapped the frayed wire, and sealed it tight. He didn't have a new connector, so he separated the wire from the chassis, ensuring the signal would flow freely. With surgical precision, he cut away the constricting

Check under and around the drive pedal for debris (shrink wrap, wood chips, dirt) that might be preventing it from returning to its full "zero" position.