OBD-II code · Powertrain (generic, extended)

P2547 Torque Management Request Input Signal A High

Torque management input A reads stuck high — analog short to reference voltage or message stuck at maximum value. The ECM rejects the request to avoid running unintended high-torque commands.

Is it safe to drive with P2547?

Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.

Common causes

  • Most likelySignal wire shorted to reference voltage
  • PossibleCAN message stuck at maximum value

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 A

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.