P1585 Throttle Control Unit Malfunction
What does P1585 mean on a Ford?
P1585 — Throttle Control Unit Malfunction. This Ford-enhanced code applies to Contour, Mystique, early electronic-throttle Fords.
Common causes of P1585
- Failed throttle control unit
- Open or shorted control unit circuits
- Corroded control unit connector
- Low system voltage
- PCM communication fault to the unit
How to fix P1585
- Check system voltage and grounds first
- Inspect the control unit connector for corrosion
- Test power and signal circuits to the unit
- Verify PCM communication with a scan tool
- Replace the throttle control unit after circuit confirmation