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CST/Berger Rotary Laser ER1 Tilt Error — Fix Guide
CST/Berger ER1 error: tilt error — the rotary laser is tilted beyond its self-leveling range and has stopped rotating. Expert fix guide from Express Tools.
CST/Berger Rotary Laser ER2 Battery Error — Fix Guide
CST/Berger ER2 error: battery error — the instrument has detected low battery or a battery fault preventing normal operation. Expert fix guide from Express Tools.
GNSS Integer Ambiguity Resolution Errors in RTK — Fix Guide
GNSS integer ambiguity resolution errors cause RTK float and initialization failures. Learn what integer ambiguity is, why it fails to resolve, and how to fix it in the field.
GNSS Multipath Interference Troubleshooting Guide
GNSS multipath interference causes noisy positions, RTK float, and degraded accuracy. Learn what multipath is, how to identify it, and how to minimize its effect on survey and machine control work.
Leica GNSS ERR-003 Age of Corrections Error — Fix Guide
Leica GNSS ERR-003 Age of Corrections on GS18, GS15: RTK corrections are delayed or stale. Fix the radio or cellular link to restore fresh corrections.
Leica GNSS ERR-004 Bluetooth Lost — What It Means & How to Fix It
Leica GNSS ERR-004 Bluetooth Lost on GS18 and other Leica GNSS rovers: Bluetooth connection to field controller dropped. Step-by-step reconnection guide.
Leica GNSS ERR-001 No Satellites Error — Fix Guide
Leica GNSS ERR-001 No Satellites on GS18, GS10, GS15: receiver not tracking any GNSS satellites. Step-by-step fix from an authorized Leica dealer.
Leica GNSS ERR-002 RTK Float Error — What It Means & How to Fix It
Leica GNSS ERR-002 RTK Float on GS18, GS15: receiver has corrections but cannot resolve fixed RTK solution. Step-by-step fix from an authorized Leica dealer.
Leica E01 Error Fix Guide
Leica E01: RTK solution degraded — the receiver cannot maintain a fixed RTK position solution.
Leica E03 Error Fix Guide
Leica E03: Tilt sensor fault — the GS18's IMU tilt compensation system has detected an error.
Leica E04 Error Fix Guide
Leica E04: Antenna connection error — the external GNSS antenna connection has a fault.
Leica MC1 IMU Sensor Fault Error — Fix Guide
Leica MC1 IMU fault error: the inertial measurement unit sensor has failed or is out of range, causing machine heading or orientation errors. Expert fix guide from Express Tools.
Leica F01 Error — Fix Guide
Leica F01: Leveling out of range — the Rugby laser is tilted beyond its automatic self-leveling limit.
Leica F02 Error — Fix Guide
Leica F02: Motor fault — the Leica Rugby's internal leveling or rotation motor has detected a failure.
Leica F05 Error — Fix Guide
Leica F05: Laser diode error — the Rugby laser diode has detected a fault condition.
Leica Rugby Temperature Error — High / Low Temperature Warning Fix Guide
Leica Rugby 610, 620, 640, 810, 820, 840 temperature error: instrument outside -10°C to +50°C operating range. Allow to warm or cool before resuming operation.
Leica Total Station ATR Horizontal Tracking Error — Fix Guide
Leica ATR horizontal tracking error on TS06, TS09, TS15, TS16, MS50: ATR cannot lock or track prism horizontally. Step-by-step fix guide from Express Tools.
Leica Total Station Tilting Axis Error (Axle Error) — Fix Guide
Leica total station tilting axis (trunnion axis) error on TS06, TS09, TS15, TS16: telescope axis not perpendicular to vertical axis. Step-by-step fix guide.
Leica E01 Error Fix Guide
Leica E01: ATR motor fault — the Automatic Target Recognition motor has failed or detected a drive error.
Leica E03 Error Fix Guide
Leica E03: EDM fault — the distance measurement system has detected an internal error.
Leica E05 Error Fix Guide
Leica E05: Memory error — the instrument's internal memory has detected a read/write failure.
Leica Total Station Laser Pointer / Guide Light Malfunction — Fix Guide
Leica total station laser pointer or EGL (Electronic Guide Light) malfunction on TS06, TS09, TS15, TS16, TM50: pointer not emitting or EGL not working. Step-by-step fix guide.
Nikon Digital Level Compensator Out of Range Error — Fix Guide
Nikon Digital Level compensator out of range error: the automatic tilt compensator cannot correct the instrument to horizontal. Expert fix guide from Express Tools.
Nikon Digital Level Overcurrent Error — Fix Guide
Nikon Digital Level overcurrent error: the instrument has detected excessive current draw, indicating a short circuit or failed component. Expert fix guide from Express Tools.
Nikon Total Station Low Battery Warning — Fix Guide
Nikon total station low battery warning on DTM-322, DTM-522, NPL-302, Nivo series: battery near depletion, instrument will shut down. Step-by-step fix guide.
Nikon Total Station Prism Not Found — Fix Guide
Nikon total station prism search failure on NPL-302+, NPL-352+, Nivo series: ATR cannot locate prism target. Step-by-step fix guide from Express Tools.
Sokkia Total Station C10 Error (EDM Fault) — Fix Guide
Sokkia C10 error: EDM fault — the electronic distance measuring unit has failed or cannot measure. Expert fix guide from Express Tools.
Sokkia Total Station C20 Error (Tilt Sensor Fault) — Fix Guide
Sokkia C20 error: tilt sensor fault — the instrument's tilt compensation system has failed or is out of range. Expert fix guide from Express Tools.
Sokkia Total Station C30 Error (Memory Fault) — Fix Guide
Sokkia C30 error: memory fault — the instrument's internal memory has failed, is full, or cannot read/write data. Expert fix guide from Express Tools.
Sokkia Total Station Data Card / Memory Card Error — Fix Guide
Sokkia total station card error on SET, CX, iX series: CompactFlash or SD card not recognized, write-protected, or incompatible format. Step-by-step fix guide.
Sokkia E001 Error — Fix Guide
Sokkia E001: ATR fault — the Automatic Target Recognition system has detected a tracking error.
Sokkia E003 Error — Fix Guide
Sokkia E003: EDM failure — the electronic distance measurement system has detected a fault.
Sokkia E004 Error — Fix Guide
Sokkia E004: Compensator out of range — the instrument is tilted beyond the automatic compensator's operating range.
Sokkia E005 Error — Fix Guide
Sokkia E005: Motor drive fault — the motorized drive system has detected a failure.
Sokkia Total Station Horizontal Collimation Error (C-Error) — Fix Guide
Sokkia horizontal collimation error (C-error) on CX-50, CX-60, SET series: line of sight not perpendicular to horizontal axis. Step-by-step fix guide.
Sokkia Total Station Vertical Index Error (i-Angle) — Fix Guide
Sokkia vertical index error (i-angle) on CX-50, CX-60, SET series: vertical circle zero misaligned with true zenith. Step-by-step calibration fix guide.
Spectra DG813 Er1 Plumb Error — Pipe Laser Fix Guide
Spectra Precision Er1: Plumb out of range — the DG613 or DG813 is tilted beyond its self-plumbing compensation limit.
Spectra DG813 Er2 Grade Sensor Fault — Pipe Laser Fix Guide
Spectra Precision Er2: Grade sensor fault — the DG613 or DG813 grade measurement system has an internal error.
Spectra Precision Er3 Error — Fix Guide
Spectra Precision Er3: Battery low — the pipe laser battery has dropped below the minimum operating threshold.
Spectra Precision Pipe Laser ER1 Out of Level Error — Fix Guide
Spectra Precision pipe laser ER1 out of level on DG813: pipe slope exceeds auto-leveling range. Step-by-step fix and manual grade setting guide from Express Tools.
Spectra Precision Pipe Laser ER3 Temperature Error — Fix Guide
Spectra Precision pipe laser ER3 temperature error on DG813: instrument outside operating temperature range. Fix guide from an authorized Spectra Precision dealer.
Spectra Precision Pipe Laser Er4 Error — What It Means & Fix Guide
Spectra Precision DG613, DG813 pipe laser Er4 error: internal hardware or sensor fault. Power cycle and try fresh battery; if it persists the instrument requires service.
Spectra Precision Rotary Laser FL1 Fault — Fix Guide
Spectra Precision rotary laser FL1 fault on LL300N, LL500, HV302, HV502: internal reference or leveling system failure. Step-by-step fix guide from Express Tools.
Spectra Precision Rotary Laser ER2 Battery Low — Fix Guide
Spectra Precision rotary laser ER2 battery low on LL300N, LL500, HV301: battery critically low and laser will shut down. Replacement and charging guide.
Spectra LL500 Er1 Leveling Error — Rotary Laser Fix Guide
Spectra Precision Er1: Leveling out of range — the LL500 or HV301 is tilted beyond its 5-degree self-leveling limit.
Spectra LL500 Er2 Motor Fault — Rotary Laser Fix Guide
Spectra Precision Er2: Internal motor fault — the LL500 or HV301's leveling or rotation motor has failed.
Spectra Precision Er4 Error — Fix Guide
Spectra Precision Er4: Laser diode overtemperature — the LL500 or HV301 laser diode has overheated.
Spectra Precision Rotary Laser ER1 Tilt Error — Fix Guide
Spectra Precision rotary laser ER1 tilt error on LL300N, LL500, HV301: instrument is out of self-leveling range. Step-by-step fix guide from an authorized Spectra Precision dealer.
Topcon GNSS E03 Base Not Connected Error — Fix Guide
Topcon GNSS E03 Base Not Connected on HiPer SR and HiPer HR: RTK corrections not reaching the rover. Step-by-step fix from an authorized Topcon dealer.
Topcon ERR-01 Error — What It Means & How to Fix It
Topcon ERR-01 on HiPer HR, HiPer V, HiPer II: No satellite lock — fewer than 4 GPS/GNSS satellites are visible to the receiver. Position cannot be computed until additional satellites come into vi
Topcon ERR-02 Error — What It Means & How to Fix It
Topcon ERR-02 on HiPer HR, HiPer V, HiPer II: PDOP too high — satellite geometry is too poor to produce a reliable position. Accuracy is degraded and the receiver refuses to output coordinates.
Topcon ERR-03 Error — What It Means & How to Fix It
Topcon ERR-03 on HiPer HR, HiPer V, HiPer II: RTK initialization failed — the receiver cannot achieve a fixed RTK solution. Operating in float or autonomous mode; survey-grade accuracy is not avai
Topcon ERR-04 Error — What It Means & How to Fix It
Topcon ERR-04 on HiPer HR, HiPer V, HiPer II: Base station connection lost — the rover is no longer receiving RTK correction data. Falling back to float or autonomous mode.
Topcon ERR-05 Error — What It Means & How to Fix It
Topcon ERR-05 on HiPer HR, HiPer V, HiPer II: Antenna fault detected — the receiver has detected a problem with the GNSS antenna, cable, or connector. Satellite signal quality is severely degraded
Topcon ERR-10 Error — What It Means & How to Fix It
Topcon ERR-10 on HiPer HR, HiPer V, HiPer II: Memory card full — the internal or external storage is at capacity. Data logging will fail until space is freed.
Topcon ERR-11 Error — What It Means & How to Fix It
Topcon ERR-11 on HiPer HR, HiPer V, HiPer II: Internal battery low — the receiver battery has dropped below safe operating threshold. Save your work and recharge immediately.
Topcon ERR-20 Error — What It Means & How to Fix It
Topcon ERR-20 on HiPer HR, HiPer V, HiPer II: Firmware corruption detected — the receiver's operating firmware has been damaged. The unit may be unable to start normally.
Topcon GNSS E01 No Fix Error — What It Means & How to Fix It
Topcon GNSS E01 No Fix on HiPer SR, HiPer HR, and Topcon GNSS rovers: receiver cannot compute a position. Step-by-step fix guide from an authorized Topcon dealer.
Topcon GNSS E02 PDOP High Error — What It Means & How to Fix It
Topcon GNSS E02 PDOP High on HiPer SR, HiPer HR: poor satellite geometry reduces position accuracy. Step-by-step fix from an authorized Topcon dealer.
Topcon GNSS E04 RTK Timeout Error — What It Means & How to Fix It
Topcon GNSS E04 RTK Timeout on HiPer HR and HiPer SR: RTK fixed solution could not be achieved within the timeout period. Expert fix guide from an authorized Topcon dealer.
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