AutoCodes – Audi – P0475 Audi

P0475 Audi Code - Exhaust Pressure Control Valve Malfunction 'A'

Q: 1. What are common symptoms of OBDII code P0475 in an Audi related to the Exhaust Pressure Control Valve Malfunction 'A'?

- Common symptoms include decreased engine performance, decreased fuel efficiency, and the illumination of the check engine light.

Q: 2. What causes the OBDII code P0475 in an Audi, indicating a malfunction with the Exhaust Pressure Control Valve 'A'?

- The code P0475 is typically triggered by a faulty exhaust pressure control valve, damaged wiring related to the valve, or a problem with the valve position sensor.

Q: 3. How can I diagnose the OBDII code P0475 in my Audi related to the Exhaust Pressure Control Valve Malfunction 'A'?

- Diagnosis involves using an OBDII scanner to retrieve the specific code, checking the wiring and connections to the exhaust pressure control valve, and testing the valve itself for proper operation.

Q: 4. Can I continue driving my Audi with the OBDII code P0475 indicating a malfunction with the Exhaust Pressure Control Valve 'A'?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the engine and emissions system. Prompt diagnosis and repair are advised.

Q: 5. How is the OBDII code P0475 related to the Exhaust Pressure Control Valve 'A' typically repaired in an Audi?

- Repair usually involves replacing the faulty exhaust pressure control valve, repairing any damaged wiring, and resetting the ECU to clear the error code.

Q: 6. Are there any DIY tips for fixing the OBDII code P0475 in an Audi related to the Exhaust Pressure Control Valve Malfunction 'A'?

- While some basic checks like inspecting the wiring and connections can be done DIY, replacing the exhaust pressure control valve may require professional tools and expertise.

Q: 7. Will resetting the error code associated with OBDII code P0475 in an Audi resolve the issue with the Exhaust Pressure Control Valve 'A'?

- Resetting the error code may temporarily turn off the check engine light, but if the underlying issue with the exhaust pressure control valve is not fixed, the code is likely to reappear.

Q: 8. How critical is it to address the OBDII code P0475 indicating a malfunction with the Exhaust Pressure Control Valve 'A' in an Audi?

- It is important to address this code promptly to prevent potential engine damage, ensure optimal performance, and maintain emissions compliance.

Q: 9. Can a malfunction with the Exhaust Pressure Control Valve in an Audi causing the OBDII code P0475 impact vehicle safety?

- While the immediate safety risk is low, prolonged driving with this issue can lead to engine problems and reduced vehicle reliability, impacting safety indirectly.

Q: 10. Is the OBDII code P0475 related to the Exhaust Pressure Control Valve 'A' covered under any warranties for Audi vehicles?

- Depending on the vehicle's age and warranty status, the repair for OBDII code P0475 may be covered under the Audi manufacturer's warranty or extended warranty plans.

Quick Answer

Exhaust Back Pressure Regulator - Is a variable position valve that controls exhaust back pressure during cold ambient temperatures to increase cab heat and decrease the amount of time needed to defrost the windshield. Common causes include Faulty Exhaust Back Pressure Valve, Exhaust Back Pressure Valve harness is open or shorted, Exhaust Back Pressure Valve 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: P0475 Audi indicates Exhaust Pressure Control Valve Malfunction 'A'.
Common causes: Common causes include Faulty Exhaust Back Pressure Valve, Exhaust Back Pressure Valve harness is open or shorted, Exhaust Back Pressure Valve 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 11,756

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 25, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0475 Audi Description

Exhaust Back Pressure Regulator - Is a variable position valve that controls exhaust back pressure during cold ambient temperatures to increase cab heat and decrease the amount of time needed to defrost the windshield. The Engine Control Module (ECM) uses the measured exhaust back pressure, (ambient) intake air temperature, engine oil temperature and engine load to determine the desired exhaust back pressure. Valve position is controlled by switching the output signal circuit to 12 volts inside the ECM. On/off time is modulated from 0 to 99 % dependent upon the exhaust back pressure desired.
Upon each initial engine start-up, the ECM exercises the exhaust back pressure valve by commanding it to cycle on and off once. If upon start-up the temperature of intake air sensed by the Intake Air Temperature (IAT) sensor is < 37°F (5°C) and the oil temperature sensed by the Engine Oil Temperature (EOT) sensor is between 32°-140°F (0-60°C) it will continue to keep the back pressure valve partially closed. As the oil temperature rises during engine operation, the ECM will control the valve in response to the rising oil temperature.

OBDII Code P0475 Audi - Exhaust Pressure Control Valve Malfunction 'A' - AutoCodes.com — P0475 Audi Code - Exhaust Pressure Control Valve Malfunction 'A'

What does this mean?

What are the Possible Causes of the DTC P0475 Audi?

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

How to Fix the DTC P0475 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

Check the Exhaust Back Pressure Valve (EBPV) butterfly valve is opening and closing freely and not sticking. If it seems to move freely you can then check the connector and circuit for the EBPV solenoid.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0475 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 P0475 Audi code?

Need more information on how to fix the P0475 Audi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0475 Audi code diagnosed by a professional: Find a repair shop in your area

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 P0475 Audi Code

1. What are common symptoms of OBDII code P0475 in an Audi related to the Exhaust Pressure Control Valve Malfunction 'A'?

- Common symptoms include decreased engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What causes the OBDII code P0475 in an Audi, indicating a malfunction with the Exhaust Pressure Control Valve 'A'?

- The code P0475 is typically triggered by a faulty exhaust pressure control valve, damaged wiring related to the valve, or a problem with the valve position sensor.

3. How can I diagnose the OBDII code P0475 in my Audi related to the Exhaust Pressure Control Valve Malfunction 'A'?

- Diagnosis involves using an OBDII scanner to retrieve the specific code, checking the wiring and connections to the exhaust pressure control valve, and testing the valve itself for proper operation.

4. Can I continue driving my Audi with the OBDII code P0475 indicating a malfunction with the Exhaust Pressure Control Valve 'A'?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the engine and emissions system. Prompt diagnosis and repair are advised.

5. How is the OBDII code P0475 related to the Exhaust Pressure Control Valve 'A' typically repaired in an Audi?

- Repair usually involves replacing the faulty exhaust pressure control valve, repairing any damaged wiring, and resetting the ECU to clear the error code.

6. Are there any DIY tips for fixing the OBDII code P0475 in an Audi related to the Exhaust Pressure Control Valve Malfunction 'A'?

- While some basic checks like inspecting the wiring and connections can be done DIY, replacing the exhaust pressure control valve may require professional tools and expertise.

7. Will resetting the error code associated with OBDII code P0475 in an Audi resolve the issue with the Exhaust Pressure Control Valve 'A'?

- Resetting the error code may temporarily turn off the check engine light, but if the underlying issue with the exhaust pressure control valve is not fixed, the code is likely to reappear.

8. How critical is it to address the OBDII code P0475 indicating a malfunction with the Exhaust Pressure Control Valve 'A' in an Audi?

- It is important to address this code promptly to prevent potential engine damage, ensure optimal performance, and maintain emissions compliance.

9. Can a malfunction with the Exhaust Pressure Control Valve in an Audi causing the OBDII code P0475 impact vehicle safety?

- While the immediate safety risk is low, prolonged driving with this issue can lead to engine problems and reduced vehicle reliability, impacting safety indirectly.

10. Is the OBDII code P0475 related to the Exhaust Pressure Control Valve 'A' covered under any warranties for Audi vehicles?

- Depending on the vehicle's age and warranty status, the repair for OBDII code P0475 may be covered under the Audi manufacturer's warranty or extended warranty plans.

Discuss the causes and fixes for P0475 Audi OBDII Code

Submit a New Comment

Dumitrache Lovin
Date: July 27, 2020 at 5:50 am

hi i identified 2 codes on my audi a5 2.0 tdi sportback 2015 the codes are p0475 and p047f could u help me. i already changed the flapper but the codes come out again thanks

Reply to Comment
OBDIITech
Date: July 28, 2020 at 2:52 am

Unfortunately, other than the Exhaust Back Pressure Valve (EBPV), I have not seen any other component setting the codes. Have you check with your dealer if still cover under the emissions warranty?

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