Aug 30, 2024 · Code P2138 indicates a mismatch or correlation issue between the two signals from the accelerator pedal position sensors, which are responsible for monitoring pedal movement.

The automotive trouble code P2138 throttle/pedal position sensor/switch D/E voltage correlation refers to a problem related to the throttle's ability to open and close properly. In the 1990's automotive …

What exactly should you expect with the P2138 code? We dive into the common causes and symptoms of this OBD code so that you can be better prepared when it shows.

Dec 5, 2025 · This article will look at the possible causes of a P2138 code being stored, its seriousness, as well as the steps you should take to properly fix and clear this code.

This guide explains the P2138 code’s meaning, symptoms, causes, and step-by-step diagnostics to fix it like a pro—potentially saving you $600-$1,200 from overpriced throttle body and sensor repairs.

OBD-II Code P2138 is defined as a Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation. The Throttle Position Sensor/Switch is located on the Throttle Body of the Intake Manifold and the …

Reading P2138 on your scan tool? Learn what this error code means and what to do about it.

Mar 28, 2021 · Check engine light code P2138 means the ECM throttle body position sensor and accelerator pedal position sensor do not match each other.

Jun 23, 2022 · In this video, our mechanic breaks down the P2138 code, its symptoms, including poor acceleration and reduced power mode, and shows you how to diagnose the potential causes so you …

Mar 22, 2014 · The P2138 trouble code is a diagnostic code that indicates an issue with the throttle/pedal position sensor/switch circuit. Specifically, it means a voltage correlation problem exists …