P0220 — Throttle/Pedal Position Sensor B Circuit
Moderate severityWhat it means
P0220 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. The control unit has flagged this circuit or signal as outside its normal operating range.
Common symptoms
- Reduced power or limp mode
- Hesitation or poor throttle response
- Unstable idle
Likely causes
- A wiring, connector or ground problem in the circuit
- A failed sensor or actuator in the circuit
- Worn position sensor or throttle body
- Connector or wiring fault on the B circuit
What to check first
- Inspect the connector and wiring for damage, corrosion or loose pins
- 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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All information, explanations and guidance on this page are general preliminary information only. They are estimates and may be entirely wrong, incomplete or inaccurate, or may not apply to your vehicle at all. Never take any action based on this content alone — do not decide to keep driving, clear codes, replace parts, repair or otherwise work on your vehicle based only on what you read here. In every case, and for any final decision, you must consult qualified technical personnel (a professional mechanic, an authorized service centre or an engineer) and obtain their approval before acting. MechanicAI accepts no liability or responsibility whatsoever for any damage, fault, injury, loss or outcome that may arise — directly or indirectly — from using or relying on this information, for any reason and under any circumstances. By using this page you acknowledge and accept these terms.