What causes Allen-Bradley error 131?

Failure in the dual-port RAM communication mechanism within the drive.. Data corruption during inter-module communication.. Hardware fault on the communication interface.

How do you fix Allen-Bradley fault code 131?

1. Cycle power to the drive. 2. Replace the Main Control Board.

131

Dual Port Failure

Allen-Bradley · PowerFlex 700

What does 131 mean?

A dual port failure has occurred within the drive's control hardware. This indicates an internal communication or memory issue, likely on the control board, which can lead to system malfunction.

Common Causes

Failure in the dual-port RAM communication mechanism within the drive.
Data corruption during inter-module communication.
Hardware fault on the communication interface.

Repair Steps & Checklist

Click steps to track your progress.

1
Cycle power to the drive.
2
Replace the Main Control Board.

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Verified technical data. Last updated: April 2026

Source: Allen-Bradley PowerFlex 700

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Dual Port Failure

Dual Port Failure

What does 131 mean?

Common Causes

Repair Steps & Checklist

Related Faults