OBD Guide

P1125

Throttle Position Sensor Intermittent

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–67 (est.)

Symptoms

  • Unstable engine idling
  • Dips or jerks when pressing the gas pedal
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Problems with gear shifting (on automatic)

Causes

  • Faulty throttle position sensor
  • Oxidized or damaged contacts in the sensor connector
  • Open or short circuit in the sensor circuit
  • Mechanical damage to the throttle assembly
  • Sensor power problems

How to Fix

  1. Check the condition of the sensor electrical connections
  2. Test the throttle position sensor with a multimeter
  3. Inspect the wiring harness for damage
  4. Clean the throttle assembly from dirt
  5. If necessary, replace the throttle position sensor

Related codes

Error P1125 by Vehicle Brand