Powertrain, generic (extended)

P2163 Throttle/Pedal Position Sensor A Maximum Stop Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2163 concerns position signal A at the upper end of its travel: with the throttle or pedal resting on its maximum mechanical stop, the reading or the learned full-open value lies outside the band the calibration accepts. On Ford layouts A is the first throttle body sensor, while D to F belong to the pedal. Ford lists P2163 for the 2014 Boss 302S with MIL and wrench lamp. A Visteon patent shows the idea: the motor presses the plate onto its fully open stop for about 60 ms, the sensor value is stored, and a learned stop outside roughly 80 to 110 degrees is reported as a failure. Carbon, a bent stop or a worn sensor track are typical causes. P2109 is the matching closed-stop check; P2164-P2168 test the other letters. Reduced power is possible.

Likely causes

Carbon or a bent stop keeps the plate from reaching full opening
Sensor A track worn at the full-open end
Replacement throttle body not matching or not relearned
Contact resistance in the sensor connector shifting the signal

Symptoms

  • Check engine and throttle warning lamps on
  • Engine does not reach full power
  • Limp mode with limited throttle opening

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–600
Time0.3–2 h

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

Parts involved

throttle position sensoraccelerator pedal position sensor

Related codes

P2109P2164P0121P2135P2119

References: performanceparts.ford.com, patents.google.com, newtonnet.co.uk, law.cornell.edu.