OBD-II code · Powertrain (generic, extended)
P2644 Torque Management Feedback Signal B High
The torque feedback signal B reads above its valid range. Source sends an implausibly high value or the bus signal is stuck high.
Is it safe to drive with P2644?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySource module sends invalid high value
- PossibleSignal stuck high on the bus
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
Related codes
- P2640Torque Management Feedback Signal A High
- P2641Torque Management Feedback Signal B
- P2642Torque Management Feedback Signal B Range/Performance
- P2643Torque Management Feedback Signal B Low
- P2645A Rocker Arm Actuator Control Circuit / Open Bank 1
- P2646A Rocker Arm Actuator System Performance/Stuck Off Bank 1
- P2647A Rocker Arm Actuator System Stuck On Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.