50020405 : Not reading device on system management (I2C) bus [arg1]. Fan module [arg2] communication is offline.

The Chassis Management Module (CMM) is not able to communicate with the specified fan module. If there is an error in a fan logic module, the CMM cannot monitor the associated fan modules or detect their presence, and the fan modules on that side of the chassis will speed up. Solve fan logic module issues before you address fan-module issues.

Severity

Error

Alert Category

Chassis/System Management (Critical)

Log Source

Cool_05

Serviceable

Yes

Recoverable

Yes

Chassis LED that is Lit

Chassis Fault

CIM Information

Prefix:CMM

and ID:0129

SNMP Trap ID

mmTrapChassisC

Automatically Notify Support

Yes

User Response

Replace the fan module.