2005 Dodge Durango P0405 EGR Valve Sensor

2005 Dodge Durango


  • 4.7L Magnum V8 Engine
  • Horsepower: Approximately 230 hp
  • Torque: Approximately 290 lb-ft


  • 5-speed automatic transmission

Fuel Economy:

  • The EPA estimated fuel economy is around 13-15 MPG city and 18-20 MPG highway for RWD, and slightly lower for 4WD.

If you’re an owner of a 2005 Dodge Durango with the 4.7L engine and encountering the diagnostic trouble code (DTC) P0405, it’s important to understand the issue at hand and take steps to address it effectively. This article aims to shed light on the P0405 code, its implications, and offer insights into resolving it. The P0405 code links to the Exhaust Gas Recirculation (EGR) Sensor A Circuit. This is an essential component of the emissions control system.

Understanding the P0405 Code:

The Engine Control Module (ECM) triggers the P0405 code, a Diagnostic Trouble Code (DTC), when it detects an abnormality in the Exhaust Gas Recirculation (EGR) Sensor Circuit. Specifically, it indicates a malfunction in the electrical circuit that monitors the EGR valve‘s position and performance. The EGR system is crucial for reducing nitrogen oxide emissions and optimizing fuel efficiency.


Potential Causes of P0405 on a 2005 Dodge Durango:

  • Faulty EGR Position Sensor: A malfunctioning EGR position sensor, which is built into the EGR valve itself, can provide inaccurate readings. This can lead to the activation of the P0405 code.
EGR valve

A vehicle’s Exhaust Gas Recirculation Valve plays a fundamental role in reducing emissions and optimizing engine performance. The EGR valve is responsible for diverting a portion of exhaust gases back into the combustion chamber.

  • Wiring or Connector Issues: Damaged wiring or loose connectors within the EGR sensor circuit can disrupt proper signal transmission, triggering the code.
  • Carbon Deposits: Carbon deposits can accumulate on the EGR valve and sensor, affecting their performance and leading to the code’s activation.

Diagnosis and Resolution Steps for P0405:

  1. Visual Inspection: Begin by visually inspecting the wiring, connectors, and components related to the EGR sensor circuit for any visible damage, corrosion, or loose connections.
  2. Check EGR Position Sensor: Test the EGR position sensor’s resistance and voltage using a multimeter. Compare the readings to manufacturer specifications and replace the sensor if necessary.
  3. Clean EGR Valve and Sensor: If carbon deposits are suspected, clean the EGR valve and sensor using an appropriate cleaning solution to restore optimal performance.
  4. Diagnostic Scan: Utilize a professional diagnostic scanner to retrieve specific data related to the P0405 issue. This can help pinpoint the exact source of the problem.
  5. Clear Codes and Test: After addressing the issue, use the diagnostic tool to clear the P0405 code. Conduct a test drive to ensure the code doesn’t reappear and that the vehicle’s performance remains optimal.

The P0405 code on a 2005 Dodge Durango signals a potential problem within the EGR Sensor A Circuit. Swift diagnosis and resolution are essential for emissions control and maintaining engine efficiency. While you can perform some initial troubleshooting, we recommend contacting a qualified Dodge automotive technician for thorough diagnostics and repairs. Regular maintenance and attention to engine codes can contribute to a smooth and eco-friendly driving experience in your Dodge Durango.

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