What causes KUKA Robot alarm KRC0098?

Broken or loose connector between motor temperature sensor and servo drive/controller board. Damaged temperature sensor element (thermistor or PT100 RTD) due to mechanical stress or overheating. Corroded or oxidized sensor connector pins causing poor electrical contact. Severed or pinched temperature sensor wiring in cable harness or robot arm routing. Faulty servo drive card or controller input channel unable to read sensor signal.

How do I fix KUKA Robot alarm KRC0098?

1. Visually inspect the temperature sensor connector on the affected motor axis for loose, corroded, or damaged pins and reseat the connector firmly 2. Check the temperature sensor wiring along the entire cable path for visible damage, kinks, or pinch points; repair or replace damaged sections 3. Use a multimeter to measure resistance at the sensor connector to verify the sensor element is functioning within specification (typically 100Ω at 0°C for PT100) 4. Power down the robot and disconnect the temperature sensor connector, then clean both male and female contact surfaces with isopropyl alcohol and allow to dry completely 5. If available, swap the temperature sensor connector to a known working axis to determine if the fault is sensor-related or controller-related 6. If the alarm persists after reconnection, contact KUKA service to replace either the temperature sensor or servo drive board depending on diagnostic results

KUKA Robot codes

axismd.ai

KUKA Robot Controller

Servo/Axis · Basic

Alarm KRC0098

KUKA Robot KRC0098 - FAILURE OF MOTOR TEMPERATURE SENSOR <AXIS NUMBER>

This alarm indicates that the temperature sensor (thermistor or PT100) on the specified motor axis has failed or become disconnected from the controller. The KRC system continuously monitors motor temperatures to prevent thermal damage and ensure safe operation; loss of this sensor signal prevents proper temperature supervision of that axis.

KUKA RobotServo/AxisBasic

KRC0098

KUKA Robot KRC0098 - FAILURE OF MOTOR TEMPERATURE SENSOR <AXIS NUMBER>

FAILURE OF MOTOR TEMPERATURE SENSOR <AXIS NUMBER>

Common Causes

Broken or loose connector between motor temperature sensor and servo drive/controller board
Damaged temperature sensor element (thermistor or PT100 RTD) due to mechanical stress or overheating
Corroded or oxidized sensor connector pins causing poor electrical contact
Severed or pinched temperature sensor wiring in cable harness or robot arm routing
Faulty servo drive card or controller input channel unable to read sensor signal

Troubleshooting Steps

1Visually inspect the temperature sensor connector on the affected motor axis for loose, corroded, or damaged pins and reseat the connector firmly
2Check the temperature sensor wiring along the entire cable path for visible damage, kinks, or pinch points; repair or replace damaged sections
3Use a multimeter to measure resistance at the sensor connector to verify the sensor element is functioning within specification (typically 100Ω at 0°C for PT100)
4Power down the robot and disconnect the temperature sensor connector, then clean both male and female contact surfaces with isopropyl alcohol and allow to dry completely
5If available, swap the temperature sensor connector to a known working axis to determine if the fault is sensor-related or controller-related
6If the alarm persists after reconnection, contact KUKA service to replace either the temperature sensor or servo drive board depending on diagnostic results

Seeing Multiple Alarms?

Seeing another alarm with this one? Enter the code.

Get machine-aware diagnosis

AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.

Start free

Was this guide helpful?

Always verify with your machine manual or a certified technician before performing service procedures.