Powertrain, generic · Fuel and air metering (injector circuit)

P0224 Throttle/Pedal Position Sensor/Switch B Circuit Intermittent

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

With electronic throttle control the throttle body carries two position sensors, A and B, usually with opposite or offset signals, and the engine module compares them (correlation code P2135). GM and Ford give the pedal sensors their own codes (P2120 ff), so B is in practice the second throttle sensor. P0224 reports brief dropouts or jumps of sensor B that do not last long enough for the steady fault codes. No manufacturer using exactly this code was found: GM counts intermittent faults within P0222/P0223, and Ford's digital sensors report intermittent faults as P0124 for sensor A and P0229 for sensor C – after more than 0.4 s, while a steady fault needs over 4 s. Depending on frequency the result is jerking or brief limp mode.

Likely causes

Loose contact or corroded connector at the throttle body
Worn spot on the sensor track
Wire breaking from engine movement or vibration
Engine module or ground connection

Symptoms

  • Occasional jerking or power dips
  • Brief limp mode
  • Check engine light (sometimes only intermittently)

Repair estimate

DifficultyMediumDIY possible
Parts and labour€50–600
Time0.5–2.5 h

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

Parts involved

throttle position sensor belectronic throttle bodysensor wiring

Related codes

P0124P0220P0222P0223P0229P2135

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