U0606Lost Communication With Throttle/Pedal Position Sensor/Switch A
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Many electronic throttle bodies now report the blade angle as digital SENT frames (SAE J2716) instead of two analog voltages. U0606 means the engine controller no longer receives valid frames from position sensor A. Ford's gasoline summaries for 2020 to 2024 use it on SENT throttle bodies: a wiring fault or a faulted SENT device lasting over 4 s lights the MIL and the wrench lamp, while a line shorted low or high gets separate codes and P0120 covers a sensor that still talks but flags itself faulty. GM's 2025 tables (25OBDG03A) name it throttle position sensor 1 and fail it as Type A for line levels under 0.5 V or over 4.1 V, wrong pulse timing, stale messages or CRC errors. Throttle authority is then cut back.
- What you may notice
- Check engine light, on Ford also the wrench lamp
- Reduced power or limp mode with limited throttle response
- Rough or unstable idle
- Likely causes
- LikelySENT signal, 5 V supply or ground wire to the throttle body open, shorted or chafed
- PossibleLoose, corroded or water-soaked throttle body connector
- PossibleSensor electronics in the throttle body failed (replacement usually as a complete throttle body)
- RareEngine controller SENT input or software fault
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.