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.

Aug 30, 2024 · The P2138 code indicates a problem with the correlation between the two accelerator pedal position sensors in the vehicle. These sensors are responsible for monitoring the position of …

Jan 5, 2026 · 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.

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 …

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 …

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.

Mar 22, 2025 · The P2138 trouble code is an OBD-II diagnostic code that indicates a problem with the throttle or accelerator pedal position sensor circuit, often affecting vehicle acceleration and …

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 …

Nov 21, 2025 · Complete guide to the P2138 trouble code: symptoms, causes, and repair costs. Learn professional diagnosis with Foxwell scanners and step-by-step DIY methods. Discover fixes for …

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