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.

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.

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.

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

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 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 16, 2025 · Learn all about the P2138 code, what causes throttle/pedal position sensor voltage correlation issues, and how to diagnose and fix common issues to maintain optimal engine …

May 20, 2025 · Did your OBD-II scan tool register a P2138 code? Learn this diagnostic trouble code’s meaning, possible causes, and common symptoms.