AutoCodesFord – P0475 Ford

P0475 Ford Code - Exhaust Pressure Control Valve Malfunction

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 Ford indicates Exhaust Pressure Control Valve Malfunction.
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 32,611
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 24, 2019
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Code P0475 Ford 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 Ford - Exhaust Pressure Control Valve Malfunction - AutoCodes.com
P0475 Ford Code - Exhaust Pressure Control Valve Malfunction

What are the Possible Causes of the DTC P0475 Ford?

  • 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 Ford?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0475 Ford 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 P0475 Ford Code

1. What are the common symptoms of OBDII code P0475 in a Ford vehicle?

The common symptoms of code P0475 in a Ford vehicle include reduced engine performance, decreased fuel efficiency, rough idling, and the illumination of the Check Engine Light.

2. What does the OBDII code P0475 Ford mean?

OBDII code P0475 in a Ford vehicle indicates a malfunction in the Exhaust Pressure Control Valve circuit.

3. What are the possible causes of the Exhaust Pressure Control Valve malfunction (P0475) in a Ford?

The possible causes of P0475 in a Ford vehicle include a faulty Exhaust Pressure Control Valve, damaged wiring or connectors, exhaust system blockages, or issues with the exhaust gas recirculation (EGR) system.

4. How can I diagnose the OBDII code P0475 in my Ford vehicle?

Diagnosing code P0475 involves using an OBDII scanner to retrieve the code, inspecting the Exhaust Pressure Control Valve and its wiring, checking for exhaust system blockages, and testing the EGR system components.

5. What are the repair options for fixing the OBDII code P0475 in a Ford?

Repairing code P0475 may involve replacing the Exhaust Pressure Control Valve, repairing or replacing damaged wiring or connectors, clearing any exhaust system blockages, or addressing issues with the EGR system.

6. Can I drive my Ford vehicle with OBDII code P0475?

It is not recommended to drive your Ford vehicle with OBDII code P0475 present, as it can lead to reduced engine performance and potential damage to the engine or emissions system.

7. How much does it typically cost to repair OBDII code P0475 in a Ford vehicle?

The cost of repairing OBDII code P0475 in a Ford vehicle can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

8. Will resetting the Check Engine Light resolve OBDII code P0475 in my Ford?

Resetting the Check Engine Light may temporarily turn it off, but it will not fix the underlying issue causing code P0475. The problem should be diagnosed and repaired to prevent further issues.

9. How urgent is it to address OBDII code P0475 in a Ford vehicle?

It is recommended to address OBDII code P0475 in a Ford vehicle as soon as possible to prevent potential damage to the engine or emissions system and to restore optimal vehicle performance.

10. Can a DIY enthusiast repair OBDII code P0475 in a Ford vehicle?

While some aspects of diagnosing and repairing code P0475 may be tackled by a knowledgeable DIY enthusiast, it is recommended to seek professional help for a thorough diagnosis and proper repair to ensure the issue is resolved correctly.

2. What is the usual cause of the OBDII code P0475 indicating an Exhaust Pressure Control Valve Malfunction in a Ford vehicle?

The typical cause of OBDII code P0475 in a Ford vehicle is a malfunctioning exhaust pressure control valve or a related wiring issue.

3. How can I diagnose the Exhaust Pressure Control Valve Malfunction associated with OBDII code P0475 in my Ford?

To diagnose the Exhaust Pressure Control Valve Malfunction related to OBDII code P0475 in your Ford, a professional mechanic can perform a thorough inspection of the exhaust pressure control valve, check the wiring for any damage, and use a diagnostic scanner to retrieve trouble codes.

4. Is it safe to continue driving my Ford with OBDII code P0475 triggered?

It is not recommended to continue driving your Ford with OBDII code P0475 triggered, as it may lead to further damage to the engine or emissions system. It is advisable to address the issue promptly to prevent potential issues.

5. Can I fix the Exhaust Pressure Control Valve Malfunction causing OBDII code P0475 in my Ford myself?

While some DIY enthusiasts may attempt to fix the issue themselves, it is recommended to have a qualified mechanic inspect and repair the exhaust pressure control valve or related components to ensure the problem is properly resolved.

6. What are the potential repair options for resolving OBDII code P0475 in a Ford due to an Exhaust Pressure Control Valve Malfunction?

Repair options for resolving OBDII code P0475 in a Ford related to an Exhaust Pressure Control Valve Malfunction may include replacing the faulty exhaust pressure control valve, repairing damaged wiring, or resetting the trouble code after fixing any underlying issues.

7. Will resetting the OBDII code P0475 in my Ford make the problem go away permanently?

Simply resetting the OBDII code P0475 in your Ford will not fix the underlying issue causing the Exhaust Pressure Control Valve Malfunction. It is essential to diagnose the problem accurately and address it accordingly to prevent the code from reoccurring.

8. How much does it typically cost to repair OBDII code P0475 in a Ford vehicle caused by an Exhaust Pressure Control Valve Malfunction?

The cost of repairing OBDII code P0475 in a Ford due to an Exhaust Pressure Control Valve Malfunction can vary depending on the extent of the issue, the parts needed for repair, and labor costs. It is advisable to obtain a few quotes from reputable mechanics to compare prices.

9. Can a clogged exhaust system cause OBDII code P0475 to trigger in a Ford vehicle?

Yes, a clogged exhaust system can potentially cause OBDII code P0475 to trigger in a Ford vehicle. It is essential to inspect the entire exhaust system, including the exhaust pressure control valve, for any obstructions or malfunctions that could lead to this trouble code.

10. Are there any preventive measures I can take to avoid encountering OBDII code P0475 due to an Exhaust Pressure Control Valve Malfunction in my Ford?

To help prevent OBDII code P0475 related to an Exhaust Pressure Control Valve Malfunction in your Ford, it is recommended to follow the manufacturer's maintenance schedule, address any engine or exhaust issues promptly, and ensure regular inspections by a qualified mechanic.

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