P0220 — Throttle/Pedal Position Sensor/Switch B Circuit Malfunction
Category: Powertrain Severity: High
Updated:
DTC code P0220 means: Throttle/Pedal Position Sensor/Switch B Circuit Malfunction. It falls under the "Powertrain" category, with an estimated severity of High. Common causes include failed accelerator pedal sensor, worn throttle sensor (track B) and damaged connector or wiring; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Failed accelerator pedal sensor
- Worn throttle sensor (track B)
- Damaged connector or wiring
- Missing 5 V reference
Symptoms
- Limp mode
- Slow throttle response
- High idle
- Check engine light
How to diagnose it step by step
- Check pedal and throttle connectors.
- Compare both signals (A and B) on the scan tool.
- Measure reference and ground.
- Replace the faulty component.
- Perform adaptation.
How to fix it
Identify whether track B belongs to the pedal or the throttle body (depends on the make). Check the connector and wiring, then replace the pedal or throttle body accordingly.
Estimated repair cost
Accelerator pedal: $100–300. Throttle body: $200–600.
Frequently asked questions
What does DTC code P0220 mean?
Throttle/Pedal Position Sensor/Switch B Circuit Malfunction.
Is code P0220 serious?
Severity High. Have it checked as soon as possible, especially if it affects safety or the catalytic converter.
Can I keep driving with code P0220?
Only as needed; power will be limited.
Related codes
P0221 P0222 P0223 P0219 P0217 P0230 P0234 P0200 P0299
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