P0122 – TPS Sensor A Low Input

Description

The ECM detects a low voltage signal from TPS sensor A.

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Symptoms

  • Hesitation
  • Poor acceleration
  • Stalling

Causes

  • Short to ground
  • Faulty TPS sensor
  • Wiring issues

Diagnosis

  • Monitor TPS voltage
  • Inspect wiring
  • Check connector

Repair

  • Repair wiring
  • Replace TPS sensor