P0221 – Throttle/Pedal Position Sensor B Range/Performance

Description

The throttle position sensor B is out of expected range.

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Symptoms

  • Rough idle
  • Hesitation
  • Poor acceleration
  • Surging
  • Check engine light

Causes

  • Faulty TPS sensor
  • Wiring issue
  • Throttle body issue
  • Connector problem
  • ECU issue

Diagnosis

  • Inspect TPS wiring
  • Test TPS voltage
  • Inspect throttle body
  • Check connectors
  • Scan live data

Repair

  • Replace TPS sensor
  • Repair wiring
  • Clean throttle body
  • Fix connectors
  • Update ECU if needed

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