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Engine-Codes – Dodge – P0473 Dodge

P0473 Dodge Code - Exhaust Pressure Sensor High

Quick Answer

The P0473 code for Dodge vehicles indicates that the exhaust pressure sensor is reading a high voltage signal. Common causes include Faulty Sensor: The exhaust pressure sensor itself may be malfunctioning or damaged, Wiring Issues: Damaged or corroded wiring connected to the sensor can cause incorrect readings, Exhaust System Blockage: A blockage in the exhaust system can lead to increased pressure readings. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0473 Dodge indicates Exhaust Pressure Sensor High.
Common causes
Common causes include Faulty Sensor: The exhaust pressure sensor itself may be malfunctioning or damaged, Wiring Issues: Damaged or corroded wiring connected to the sensor can cause incorrect readings, Exhaust System Blockage: A blockage in the exhaust system can lead to increased pressure readings.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Aug 25, 2024
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Code P0473 Dodge Description

The P0473 code for Dodge vehicles indicates that the exhaust pressure sensor is reading a high voltage signal. This sensor is responsible for monitoring the exhaust pressure within the exhaust system and sending this information to the engine control module (ECM). When the sensor detects a high voltage signal, it can lead to issues with the vehicle's performance, emissions, and fuel efficiency. If not addressed, it can potentially cause damage to other components of the exhaust system.

OBDII Code P0473 Dodge - Exhaust Pressure Sensor High
P0473 Dodge Code - Exhaust Pressure Sensor High

Common Causes of P0473 Dodge

  1. Faulty Sensor: The exhaust pressure sensor itself may be malfunctioning or damaged.
  2. Wiring Issues: Damaged or corroded wiring connected to the sensor can cause incorrect readings.
  3. Exhaust System Blockage: A blockage in the exhaust system can lead to increased pressure readings.
  4. Exhaust Gas Recirculation (EGR) System: Issues with the EGR system can impact exhaust pressure readings.
  5. ECM Malfunction: A malfunctioning ECM can also cause the sensor to read high voltage signals.

Symptoms of P0473 Dodge

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Reduced Engine Power: The vehicle may experience a loss of power or reduced engine performance.
  3. Poor Fuel Efficiency: A high exhaust pressure reading can lead to poor fuel efficiency, resulting in increased fuel consumption.
  4. Rough Idling: The engine may idle rough or unevenly due to the incorrect exhaust pressure readings.
  5. Black Smoke: Excessive black smoke coming from the exhaust may be a sign of high exhaust pressure.

How to Fix P0473 Dodge

  1. Diagnostic Check: Use an OBD-II scanner to confirm the P0473 code and identify the specific cause of the issue.
  2. Inspect Sensor and Wiring: Check the exhaust pressure sensor and wiring for any visible damage or corrosion.
  3. Clear Fault Codes: Clear the fault codes and see if the issue reoccurs after driving the vehicle.
  4. Repair or Replace Sensor: Replace the exhaust pressure sensor if it is faulty or damaged.
  5. Check Exhaust System: Inspect the exhaust system for any blockages or restrictions that may be causing high pressure readings.

Cost to Fix P0473 Dodge

The cost of repairing a P0473 code can vary depending on the specific cause of the issue. On average, the cost of replacing an exhaust pressure sensor ranges from $100 to $300, including parts and labor. Additional costs may apply if there are other underlying issues with the exhaust system. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for P0473 Dodge

Replacing the exhaust back pressure usually takes care of the problem

When is the Code Detected?

An Exhaust Back Pressure (EBP) signal that is detected out of range (high or low) by the Engine Control Module (ECM) will cause the engine to ignore the EBP signal and disable exhaust back pressure operation.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0473 Dodge Code

1. What are the common symptoms of OBDII code P0473 in a Dodge vehicle?

- Common symptoms include reduced engine power, poor fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P0473 "Exhaust Pressure Sensor High" mean in a Dodge vehicle?

- This code indicates that the exhaust pressure sensor is detecting a higher than normal pressure in the exhaust system.

3. What are some possible causes of OBDII code P0473 in a Dodge vehicle?

- Potential causes include a faulty exhaust pressure sensor, damaged wiring or connectors, exhaust system leaks, or issues with the diesel particulate filter.

4. How can I diagnose the OBDII code P0473 in my Dodge vehicle?

- Diagnosis typically involves using a scan tool to read the code, inspecting the exhaust pressure sensor and related components, and checking for any leaks in the exhaust system.

5. Can I continue to drive my Dodge vehicle with OBDII code P0473 present?

- It is not recommended to drive with this code present, as it can lead to further damage to the engine or emissions system.

6. How can I repair OBDII code P0473 in my Dodge vehicle?

- Repair options may include replacing the exhaust pressure sensor, repairing any damaged wiring or connectors, fixing exhaust leaks, or addressing issues with the diesel particulate filter.

7. Is it possible to reset the OBDII code P0473 in a Dodge vehicle without fixing the underlying issue?

- While clearing the code may temporarily turn off the Check Engine Light, it is important to address the underlying problem to prevent further issues.

8. Are there any preventative measures to avoid OBDII code P0473 in my Dodge vehicle?

- Regular maintenance, such as inspecting the exhaust system for leaks and ensuring the exhaust pressure sensor is functioning properly, can help prevent this code from occurring.

9. Can a DIY enthusiast repair OBDII code P0473 in a Dodge vehicle?

- Depending on the cause of the code, some repairs may be possible for DIY enthusiasts with the right tools and knowledge. However, complex issues may require professional assistance.

10. How long does it typically take to repair OBDII code P0473 in a Dodge vehicle?

- The repair time can vary based on the specific cause of the code and the extent of the repairs needed. Simple fixes may take a few hours, while more complex issues could require more time and expertise.

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