P2641
Torque Management Feedback Signal B
The torque feedback signal B from a second torque user is missing or invalid. The engine controller cannot coordinate torque reduction with this user.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Required CAN message not received in timeCommon
- Source module reports an internal faultPossible
Parts involved
- Secondary Torque User
- Communication Bus
- Wiring Harness
P2641 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.