What are the common causes of P2641?

A torque management feedback signal B that is missing or out of range. A loose or corroded connector on the feedback B circuit. Chafed feedback B wiring. A failed torque management solenoid feeding signal B.

Read torque management feedback signal B on a scan tool. Compare signal B to the commanded torque. Test the feedback B circuit for opens and shorts. Inspect the feedback B connector. Replace the torque management solenoid if the circuit tests good. Clear the code and retest.

P2641

Torque Management Feedback Signal B

System: Computer output circuits (P code)
Lamp: Check Engine Light
Category: Powertrain - Computer and Auxiliary Controls

What it means

P2641 means Torque Management Feedback Signal B.

Check these first

A torque management feedback signal B that is missing or out of range
A loose or corroded connector on the feedback B circuit
Chafed feedback B wiring
A failed torque management solenoid feeding signal B

What to do next

Read torque management feedback signal B on a scan tool
Compare signal B to the commanded torque
Test the feedback B circuit for opens and shorts
Inspect the feedback B connector
Replace the torque management solenoid if the circuit tests good
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.