AutoCodes – Audi – P0472 Audi

P0472 Audi Code - Exhaust Pressure Sensor Low

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: P0472 Audi indicates Exhaust Pressure Sensor Low.
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 4,566

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 P0472 Audi 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 P0472 Audi - Exhaust Pressure Sensor Low - AutoCodes.com — P0472 Audi Code - Exhaust Pressure Sensor Low

What does this mean?

What are the Possible Causes of the DTC P0472 Audi?

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 P0472 Audi?

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 P0472 Audi 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.

Need more information about the P0472 Audi code?

Need more information on how to fix the P0472 Audi code? Get Access to Factory Service Manuals

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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 P0472 Audi Code

1. What are the common symptoms of OBDII code P0472 in an Audi related to the Exhaust Pressure Sensor Low?

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

2. What are the possible causes of the OBDII code P0472 in an Audi?

- The code P0472 can be triggered by a faulty exhaust pressure sensor, wiring issues, or a clogged exhaust pressure sensor tube.

3. How can I diagnose the OBDII code P0472 in my Audi?

- Diagnosis involves using an OBDII scanner to retrieve the code, checking the exhaust pressure sensor and wiring for any visible damage, and testing the sensor's functionality.

4. Can a clogged diesel particulate filter (DPF) cause the OBDII code P0472 in an Audi?

- Yes, a clogged DPF can increase exhaust pressure and trigger the P0472 code due to the sensor detecting low pressure readings.

5. What are some repair tips for fixing the OBDII code P0472 in an Audi?

- Repair options include replacing the exhaust pressure sensor, repairing any damaged wiring, cleaning or replacing the clogged exhaust pressure sensor tube, and addressing any underlying issues with the DPF.

6. Is it safe to continue driving with the OBDII code P0472 in my Audi?

- It is not recommended to drive with the P0472 code present, as it can lead to further engine damage and decreased performance.

7. Can I reset the OBDII code P0472 in my Audi using an OBDII scanner?

- Yes, you can reset the code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it typically cost to repair the OBDII code P0472 in an Audi?

- The cost of repairs can vary depending on the exact cause of the code, but it may range from $100 to $300 for parts and labor.

9. Are there any preventive measures I can take to avoid the OBDII code P0472 in my Audi?

- Regular maintenance, such as keeping the DPF clean and ensuring proper exhaust system function, can help prevent issues that lead to the P0472 code.

10. Can a DIY enthusiast repair the OBDII code P0472 in an Audi, or is it best left to professionals?

- While some simple repairs like sensor replacement or checking wiring can be done by DIY enthusiasts, complex issues may require professional diagnosis and repair to ensure proper fix.