P0224 — Throttle/Pedal Position Sensor B Circuit Intermittent
Moderate severityWhat it means
P0224 is stored when the engine control unit sees a fault involving throttle/pedal position sensor B. Sensor B is the second, redundant throttle/pedal position signal that the control unit cross-checks against sensor A for safety. An “intermittent” fault appears and clears on its own, which almost always means a connection problem rather than a dead part.
Common symptoms
- A warning light that comes and goes
- Reduced power or limp mode
- Hesitation or poor throttle response
- Unstable idle
Likely causes
- Loose, backed-out or corroded connector pins
- Chafed wiring that shorts with movement or vibration
- Worn position sensor or throttle body
- Connector or wiring fault on the B circuit
What to check first
- Wiggle-test the connector and harness while watching the live signal
- Compare sensor A and B percentages in live data — they should track together
- Inspect the connector and wiring
Can you keep driving?
Because B is a safety-redundant signal, the car often drops to reduced power; have it checked promptly.
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