OBD-II code · Powertrain (generic, extended)
P2640 Torque Management Feedback Signal A High
The torque feedback signal A reads above its valid range. Source module sends an implausibly high value or the bus signal is stuck high.
Is it safe to drive with P2640?
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
- Tcm, Communication Bus
Related codes
- P2644Torque Management Feedback Signal B High
- P263DReductant Heater Driver Performance
- P263EGlow Plug Control Module 1 Over Temperature
- P263FGlow Plug Control Module 2 Over Temperature
- P2641Torque Management Feedback Signal B
- P2642Torque Management Feedback Signal B Range/Performance
- P2643Torque Management Feedback Signal B Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.