AutoCodes – Dodge – P0473 Dodge

P0473 Dodge Code - Exhaust Pressure Sensor High

Quick Answer

The Exhaust Back Pressure (EBP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the Engine Control Module (ECM), produces a linear analog voltage signal that indicates pressure. Common causes include Faulty Exhaust Back Pressure Sensor, Exhaust Back Pressure Sensor harness is open or shorted, Exhaust Back Pressure Sensor circuit poor electrical connection. 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 Exhaust Back Pressure Sensor, Exhaust Back Pressure Sensor harness is open or shorted, Exhaust Back Pressure Sensor circuit poor electrical connection.
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.

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Code Popularity 3,094

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 23, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0473 Dodge Description

The Exhaust Back Pressure (EBP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the Engine Control Module (ECM), produces a linear analog voltage signal that indicates pressure.
The EBP sensor's primary function is to measure exhaust back pressure so that the ECM can control the exhaust back pressure regulator (EPR) when needed.

OBDII Code P0473 Dodge - Exhaust Pressure Sensor High - AutoCodes.com — P0473 Dodge Code - Exhaust Pressure Sensor High

What does this mean?

What are the Possible Causes of the DTC P0473 Dodge?

Faulty Exhaust Back Pressure Sensor
Exhaust Back Pressure Sensor harness is open or shorted
Exhaust Back Pressure Sensor circuit poor electrical connection

How to Fix the DTC P0473 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Replacing the exhaust back pressure usually takes care of the problem

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0473 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.