P0122 Throttle/Pedal Position Sensor/Switch "A" Circuit Low

Powertrain Severity: High Generic OBD-II

Throttle position sensor A signal is too low.

Common causes

  • Open or shorted signal wire
  • Faulty sensor

Symptoms

  • Check engine light
  • Limp mode
  • Poor acceleration

What to check

  1. Check 5 V reference
  2. Inspect wiring
  3. Replace throttle body sensor if faulty

Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0122, follow the service information for that make and model.

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