P0224: Throttle/Pedal Position Sensor/Switch B Circuit Intermittent

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.

High severity. Can I keep driving?Be careful: the car may suddenly lose power. If it goes into limp mode, get off the highway and calmly make your way to a repair shop.

Symptoms

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

Most 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

What to check, in order

Start with the simplest. You can tick off each step.

Check the pedal and throttle connectors
Gently move the wiring with the engine running and watch whether the reading changes.
Use live data to confirm that both sensors rise smoothly and consistently
Clean the throttle if it has carbon buildup
Run the relearn procedure with the scanner if the manufacturer requires it
Replace the part identified by the diagnosis

Good to know

Repair difficulty: medium
It can trigger limp mode.
It affects emissions.

What each character of P0224 means

P: Powertrain: engine and transmission
0: Generic code: same on every make
2: Fuel injection
24: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0224?

Be careful: the car may suddenly lose power. If it goes into limp mode, get off the highway and calmly make your way to a repair shop.

What causes code P0224?

The most common causes are: loose contact or corroded connector at the throttle body; worn spot on the sensor track; wire breaking from engine movement or vibration.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.