P1616 — Kia — Chassis Accelerator Sensor Signal Low Voltage

P1616 (Kia): Chassis Accelerator Sensor Signal Low Voltage — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Chassis Accelerator Sensor Signal Low Voltage. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain

Symptoms

  • Check engine light illumination
  • Vehicle enters limp home mode
  • Reduced engine power
  • Erratic accelerator pedal response
  • Stalling or failure to accelerate

Possible causes

  • Faulty accelerator pedal position sensor
  • Short circuit in the sensor signal wiring
  • Poor electrical connection at the sensor harness
  • Damaged chassis wiring harness
  • Internal failure of the ECM/PCM module

What to check

  • Inspect the accelerator pedal sensor connector for corrosion or loose pins
  • Measure reference voltage at the sensor connector using a multimeter
  • Check continuity of the signal wire between the sensor and the ECM
  • Perform a voltage drop test on the sensor ground circuit
  • Verify ECM signal input values using a diagnostic scan tool