OBD-II code · Powertrain (generic, extended)
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.
Is it safe to drive with P2641?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyRequired CAN message not received in time
- PossibleSource module reports an internal fault
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Secondary Torque User, Communication Bus, Wiring Harness
Related codes
- P2637Torque Management Feedback Signal A
- P263EGlow Plug Control Module 1 Over Temperature
- P263FGlow Plug Control Module 2 Over Temperature
- P2640Torque Management Feedback Signal A High
- P2642Torque Management Feedback Signal B Range/Performance
- P2643Torque Management Feedback Signal B Low
- P2644Torque Management Feedback Signal B High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.