OBD codes / P0220
P0220
SeriousThrottle/Pedal Position Sensor B Circuit
Take P0220 seriously — it commonly forces reduced-power mode and affects throttle response, which is a safety concern in traffic. It's usually drivable gently to a shop, but get it diagnosed promptly and don't rely on the car if acceleration is limited or unpredictable.
What this code means
Modern throttle and pedal assemblies use two sensors ('A' and 'B') that the computer cross-checks for safety. P0220 is a general fault in the 'B' throttle/pedal position sensor circuit. Common causes are a failed sensor, a wiring or connector fault, or — since the sensor is usually built into the electronic throttle body or accelerator pedal assembly — a failure of that whole unit. Because the throttle system depends on agreement between the two sensors, a fault here often forces reduced-power 'limp' mode.
Symptoms you might notice
- Reduced-power or 'limp' mode
- Hesitation or poor throttle response
- Rough idle or stalling
- Check-engine light, often with a warning light
What it costs to fix
Typical range: $60–$500 · about ~0.3–1.5 hrs of labor
| If the cause is… | Part | Labor |
|---|---|---|
| Accelerator pedal position sensor assembly | $50–$250 | ~0.3–1 hrs |
| Electronic throttle body | $150–$500 | ~0.5–1.5 hrs |
| Wiring / connector repair | $10–$120 | ~0.5–1.5 hrs |
Depends on whether the 'B' sensor lives in the pedal assembly or the throttle body — the pedal sensor is usually the cheaper of the two. A wiring/connector fix is inexpensive once found.
The price swings on which cause it turns out to be — so confirm the cause before paying. Diagnose P0220 for my exact vehicle →
Frequently asked
Can I drive with P0220?
Cautiously and briefly. It often triggers reduced-power mode, which limits acceleration — risky in traffic. Drive gently to a shop if you must, and get it diagnosed promptly.
What is the 'B' throttle position sensor?
Throttle and pedal assemblies use two sensors the computer cross-checks for safety. The 'B' sensor is the second of that pair; P0220 is a fault in its circuit. The redundancy is why a single-sensor fault often triggers a protective limp mode.
Is P0220 the throttle body or the pedal?
Either — the 'B' sensor may be in the electronic throttle body or the accelerator pedal assembly depending on the vehicle. Diagnosis (and the wiring layout) determines which, and the pedal sensor is usually the cheaper fix.
How much does it cost to fix P0220?
Modest if it's the pedal sensor or wiring; more if it's the electronic throttle body. Diagnosis identifies which component carries the 'B' sensor before you buy parts.
Seeing P0220 on your car? Get a diagnosis specific to your exact year, make and model.
Diagnose P0220 for my vehicleGeneric OBD-II reference. Manufacturer-specific behavior varies — confirm with a scan tool and, for safety-related codes, a professional inspection.