Why Does the eSPI Reg Access Sensor Report “Unknown” in the Sensor Readings Screen of the Integrated BMC Web Console?
Content Type: Troubleshooting | Article ID: 000088833 | Last Reviewed: 03/11/2026
eSPI Reg Access sensor is reported as unknown in Sensor Readings screen of Integrated BMC Web Console on Intel® Server Board S2600BP family.
To make the sensor function, the BIOS, BMC firmware, and Field Replaceable Unit/Sensor Data Record (FRUSDR) must match with the appropriate Intel® Server Board S2600BP Family BIOS and Firmware Update Package.
The sensor eSPI Reg Access for feature Integrated BMC eSPI register access restriction was added starting in S2600BP FRUSDR 1.42.