What does code P0406 mean?

EGR Sensor A Circuit High: The EGR position sensor is reading above its expected range.

P0406 is rated as medium severity. Schedule service — affects performance or emissions.

P0406

EGR Sensor A Circuit High

Powertrain Code · Medium

What does P0406 mean?

The EGR position sensor is reading above its expected range.

System: EGR System

P0406 is a powertrain diagnostic trouble code indicating egr sensor a circuit high. This code is classified as medium severity, which means: schedule service — affects performance or emissions.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.