OBD Guide

P2127

Throttle/Pedal Position Sensor/Switch E Circuit Low

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine Light Is On
  • The engine goes into emergency mode
  • Reduced engine power
  • Unstable operation at idle
  • Acceleration problems

Causes

  • Gas pedal position sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Problems with power supply or sensor ground
  • Engine ECU malfunction

How to Fix

  1. Check the continuity of the gas pedal position sensor circuit
  2. Check the supply voltage and ground of the sensor
  3. Inspect the sensor connector for damage and oxidation.
  4. Check the resistance of the sensor in different positions of the gas pedal
  5. If necessary, replace the gas pedal position sensor

Related codes

Error P2127 by Vehicle Brand