OBD Guide

P2125

Throttle/Pedal Position Sensor/Switch E Circuit

P2125 is an OBD-II diagnostic trouble code meaning: Throttle/Pedal Position Sensor/Switch E Circuit. Common causes: gas pedal position sensor malfunction, open or short circuit in the circuit. Estimated repair cost: $17–56.

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

Symptoms

  • Unstable engine operation
  • Power Loss
  • Check Engine light comes on
  • Acceleration problems
  • The engine goes into emergency mode

Causes

  • Gas pedal position sensor malfunction
  • Open or short circuit in the circuit
  • Poor contact in the sensor connector
  • Engine control unit (ECU) malfunction
  • Wiring harness damage

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect connectors and contacts for corrosion or damage
  3. Check sensor resistance and voltage
  4. Replace the gas pedal position sensor if necessary
  5. Calibrate the sensor after replacement

Related codes

Error P2125 by Vehicle Brand

FAQ

What does the P2125 code mean?

P2125 is an OBD-II diagnostic trouble code that indicates: Throttle/Pedal Position Sensor/Switch E Circuit

What causes a P2125 error code?

The most common causes of P2125 include: Gas pedal position sensor malfunction; Open or short circuit in the circuit; Poor contact in the sensor connector; Engine control unit (ECU) malfunction.

How do I fix a P2125 diagnostic trouble code?

To fix P2125: Check the integrity of the sensor circuit. Inspect connectors and contacts for corrosion or damage. Check sensor resistance and voltage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2125?

Limited driving only, diagnose soon

How much does it cost to fix P2125?

The estimated repair cost for P2125 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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