Code P0406: Exhaust Gas Recirculation Sensor A Circuit High
Learn what Trouble Code P0406 means, the cause, and how to fix it.
P0406 Code Meaning, Causes, Symptoms & Tech Notes
When the sensor detects that the voltage in the circuit is too high, it triggers the P0406 code. Diagnose the issue using a scan tool to confirm the P0406 code and pinpoint the exact cause. …
P0406 – Meaning, Causes, Symptoms, & Fixes - Fixd App
Mar 25, 2022 · Engine code P0406 could be caused by a number of things, including a bad EGR valve, faulty wiring, or carbon buildup inside the EGR valve. If you’d like to try to fix code …
P0406 Code: Meaning, Symptoms, Causes, & Fixes
What does the P0406 Code mean? P0406 code indicates that your powertrain control module (PCM) detects a high voltage signal from the exhaust gas recirculation (EGR) sensor A.
P0406 Code Fix Guide: EGR Sensor "A" Circuit High Explained
Jun 20, 2025 · The P0406 fault code indicates a problem with the EGR system, specifically the EGR position sensor. While this problem may seem tricky, most repairs, such as cleaning the …
OBD2 Code P0406 – Causes, Symptoms, and Repairs
Sep 17, 2025 · Learn all about the P0406 code, what causes Exhaust Gas Recirculation Sensor "A" Circuit High, and how to diagnose and fix common issues to maintain optimal engine …
P0406 OBD-II Code: Exhaust Gas Recirculation Sensor A Circuit ...
Diagnostic trouble code (DTC) P0406 stands for “Exhaust Gas Recirculation Sensor A Circuit High.” It means that the powertrain control module (PCM) perceives a high voltage signal from …