Error code

OBD2 P0220

OBD2P0220
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Throttle/Pedal Position Sensor/Switch 'B' Circuit.

Severity

moderateCan drive, but performance issues may occur.

Summary

P0220 indicates a malfunction in the throttle position sensor B or accelerator pedal position sensor B circuit on your vehicle.

Symptoms

  • Check Engine light is illuminated
  • Visible black smoke from tailpipe at startup
  • Hard starting, no-starting conditions
  • Poor acceleration and power loss
  • Rough idling and hesitation upon acceleration

Common Causes

  • Damaged or corroded wiring and connectors
  • Defective throttle position sensor (TPS) or pedal sensors
  • Mal-adjusted TPS sensors
  • Mechanical wear in the TPS sensor or throttle body
  • Carbon deposits impeding throttle plate movement

Diagnosis

  1. Check for correct adjustment of TPS sensors
  2. Inspect wiring and connectors for damage or corrosion
  3. Test sensor output with a suitable scanner
  4. Clean throttle body if carbon deposits are present

Fixes

  • Replace defective throttle position sensor (TPS) or pedal sensors

FAQ

What should I do if the P0220 code persists after cleaning and adjusting?

If the issue continues, it may be necessary to replace faulty components such as the TPS sensor or pedal sensors.

Can carbon deposits in the throttle body cause this code?

Yes, carbon buildup can impede the movement of the throttle plate and trigger P0220. Cleaning the throttle body may resolve the issue.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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