OBD-II code · Powertrain (generic, extended)
P2549 Torque Management Request Input Signal B Range/Performance
Input B is electrically intact but the values are implausible — same failure mode as the A-side performance fault, applied to the second torque-management channel.
Is it safe to drive with P2549?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyRequesting module sending invalid values
- Less likelySensor element aged beyond calibration window
- Less likelySensor mounting loose - signal damping
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Torque Management Input B
Related codes
- P2545Torque Management Request Input Signal A Range/Performance
- P2548Torque Management Request Input Signal B
- P2546Torque Management Request Input Signal A Low
- P2547Torque Management Request Input Signal A High
- P254APTO Speed Selector Sensor/Switch 1 Circuit/Open
- P254BPTO Speed Selector Sensor/Switch 1 Range/Performance
- P254CPTO Speed Selector Sensor/Switch 1 Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.