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U0606 Lost Communication With Throttle/Pedal Position Sensor/Switch A

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

SENT signal, 5 V supply or ground wire to the throttle body open, shorted or chafed
Loose, corroded or water-soaked throttle body connector
Sensor electronics in the throttle body failed (replacement usually as a complete throttle body)
Engine controller SENT input or software fault

Symptoms

  • Check engine light, on Ford also the wrench lamp
  • Reduced power or limp mode with limited throttle response
  • Rough or unstable idle

Repair estimate

DifficultyMediumDIY possible
Parts and labour€50–600
Time0.5–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

throttle pedal sensor asensor wiring

Related codes

P0120P0121P0122P0123P0124U0607U0608U0681

References: fordservicecontent.com, gsi.ext.gm.com, nxp.com, law.cornell.edu.