P06AFTorque Management System Forced Engine Shutdown
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- GM uses P06AF for a cross-check between two control modules: the monitored module (engine or transmission module, each with main and secondary processor) sends a fixed answer sequence over CAN only if both its processors work together correctly; the monitoring module (engine, transmission or hybrid control module) sets P06AF if the pattern is wrong or missing. In all GM tables from 2016 to 2025 it is type A – lamp in the first trip – and the torque management may shut the engine down for safety. Typical causes are processor or software faults in one of the modules, communication problems or supply interruptions. Look for further processor codes (P0606, P060A, P060B) and software bulletins. No other manufacturer document available to us uses P06AF.
- What you may notice
- Check engine light
- Engine shuts off or does not start
- Reduced power
- Further processor or communication codes
- Likely causes
- LikelySoftware fault in engine, transmission or hybrid module
- PossibleProcessor fault in one of the modules
- PossibleCAN communication disturbance between the modules
- RareSupply interruption or poor ground of a module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.