P040D - OBD II Trouble Code

Our automotive experts have put together the following information about the P040D diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P040D code.

What Does P040D Code Mean?

OBD-II Code P040D is defined as a Exhaust Gas Recirculation Temperature Sensor "A" Circuit High

An Exhaust Gas Recirculation (EGR) Temperature Sensor is an electrical sensing probe that monitors EGR temperature going in and out of the EGR Cooler and transmits the signal to the engine control control module. When the engine control module (PCM) detects an implausible signal from the EGR Temperature Sensor, the PCM will set code P040D.

Common Problems That Trigger the P040D Code

• EGR temperature sensor failure
• Powertrain Control Module (PCM) failure
• Wiring issue