P0220: Throttle position sensor 'B' circuit malfunction
Drive carefully. Get it checked within a week or two.
Can I drive with P0220?
Yes, but drive carefully and get it checked soon. Secondary throttle sensor circuit failed; engine may enter reduced power mode.
What does P0220 mean?
P0220 stands for Throttle/Pedal Position Sensor/Switch 'B' Circuit Malfunction.
Symptoms you may notice
- Sudden 'Reduced Engine Power' warning on dashboard
- Gas pedal feels dead or vehicle will not accelerate past 25-30 mph
- Jerky throttle response and abrupt engine surging
How much does it cost to fix?
Repair costs for code P0220 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Worn potentiometer inside throttle body or pedal
- Corroded connector terminals
- Faulty electronic throttle body assembly
- Wiring short in harness
What to do next
- Check throttle pedal and throttle body electrical plugs.
- Test throttle sensor linearity with scan tool.
- Replace throttle body or accelerator pedal assembly.
Last updated: October 2026
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General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code P0220 affects the backup throttle position sensor track. Drive-by-wire cars use two sensors for safety redundancy. Drive cautiously to a repair facility.