Technical Diagnostic Search
Heating Element NTC Open Circuit
Error ERR 02 indicates that the main control board has detected an open circuit or infinite resistance across the lower/main heating element NTC thermistor circuit, tripping thermal runaway protection and disabling all heating cycles.
MopExtend Arm Limit Switch Stall
Error 107 occurs when the robot's MCU detects an actuation timeout, current spike, or failure of the optical/microswitch sensor during the MopExtend arm's outward cycle along baseboards. The motor controller cuts drive current to protect the servo assembly from thermal burnout.
Toolchanger Docking Sensor Read Failure
The XL-Buddy master board failed to poll or read the Hall docking sensor status across the modular differential RS-485/I2C toolhead bus on a specific tool carriage, triggering a safety interlock during tool changing operations.
HV Isolation Contactor Lockout
Error BMS_b047 triggers when the Battery Management System detects high-voltage isolation resistance falling below safe operating thresholds (<500 ohms/volt or roughly <200 kOhms to chassis ground). To protect the chassis from electrification, the BMS commands pyrofuse integrity checks and main contactor separation, downgrading the drive unit into Turtle Mode or an outright vehicle shutdown.
Front Steer-by-Wire Actuator Timeout
The Steer-by-Wire (SBW) domain controller lost communications over the private CAN-FD / ethernet network with the primary front steering rack actuator ECU. The vehicle has engaged redundancy failover or safe-stop mode to prevent uncontrolled lateral movement.
Relay Test Fault Error 11
Victron Error 11 occurs when the inverter-charger's internal grid backfeed protection check fails during connection sequence. Before closing internal transfer contacts, the MultiPlus-II measures potential across the safety relays; if voltage is detected when the relays are commanded open or if contact welding is sensed, the unit trips to prevent dangerous islanding.
NVLink Uncorrectable Error SXid 63
NVIDIA driver SXid 63 reports an uncorrectable fatal error on the NVLink interconnect fabric. A port on the H100 SXM5 GPU or interconnected NVSwitch encountered physical layer packet degradation, link integrity breakdown, or bad cyclic redundancy checks (CRC) exceeding recovery thresholds.
E100 Update Loop Hardware Failure
Error E100 (specifically subcodes such as E100 0000070D or E100 00000703) triggers during system firmware updates when the OS payload verification detects a cryptographic handshake failure or hardware absence/corruption across paired board subsystems, such as Southbridge interconnect integrity or onboard flash pairing.
Excessive Ground Leakage Current Trip
Alarm 2064 triggers when the inverter's internal Residual Current Monitoring Unit (RCMU) detects continuous or surging leakage current (Idc/Iac) to protective earth exceeding safety thresholds (typically >300 mA surge or sustained >30 mA difference), characteristic of parasitic capacitance discharge or isolation degradation in transformerless topologies.
AM5 Socket Post Code 00
Q-Code 00 indicates that the motherboard UEFI/BIOS has failed to detect, communicate with, or initialize the CPU. This halts the power-on self-test prior to DRAM or PCIe enumeration, commonly caused by unseated LGA 1718 socket pins, missing EPS12V rail voltage, outdated AGESA firmware lacking Granite Ridge microcode, or a cracked substrate/defective CPU.