What is the P0475 Code on 7.3 Powerstroke? & How Do I Fix It?

Many DTCs, or Diagnostic Trouble Codes, should be known if you are using a 7.3L 7.3L Powerstroke for a long time. One of these trouble codes is P0475, and it’s related to the Exhaust Back Pressure Valve.

This article will help you if you receive the DTC P0475. This article will cover everything you need to know about this error code, from its definition to its solution.

What does the P0475 code mean on a 7.3L Powerstroke?

Ford 7.3L Powerstroke DTC P0475 is one. The trouble code P0475 is Exhaust Back Pressure Control Valve Failure.

EBPV (Exhaust Back Pressure Valve) generates heat in the form of BP to aid cold start warm up. This warming device is crucial in maintaining engine safety in cold/snow conditions.

The error code P0475 is generated when the Powertrain Control Module (or ECM) detects any problem with EBPV. This could be anything, from damaged valve sensors to lousy wiring.

Signs You Might Get The P0475 Code On A 7.

As with other DTCs for 7.3L engines, P0475 has common symptoms. If you notice the following symptoms, expect to receive this error code.

• CEL (Check Engine Lights) is turned on
• Manufactured without Engine Power
• Irregular Revolution per Minute or RPM
• It takes unexpectedly longer to warm up a cold engine
• The engine Won’t Start At All (Rare Scenario)

Even though you have received the error code, it is possible not to get the warning/check engine light. You will need to rely on the scanner and other symptoms to determine the error code.

The Causing Factors of the Error Code P0475

There are many reasons why the exhaust back pressure control valve may malfunction. These are the most common causes of error code P0475.

1. Faulty Wirings in PCM & Exhaust Control Solenoid
2. Damaged Exhaust Back pressure valve
3. EBPV Harness can be either shorted or open
4. Poor electrical connection to the EBPV
5. Faulty Powertrain Control Module (Rare Scenario)

A damaged exhaust backpressure valve most commonly causes this error code.

What is Code P0475 on a 7.3L Powerstroke?

P0475 is moderately severe for 7.3L Powerstroke. Although it won’t immediately kill your engine, it will continue to damage it.

It’s a fantastic decision to correct this error code and all others while they are still in the primary stage.

How To Solve P0475 Error Code On 7.3L Powerstroke?

With the right equipment, you can solve this error code yourself. You should have the following equipment:

1. Scanner
2. Electric Contact Cleaner or 91% Rubbing Alcohol
3. DVOM, Digital Volt/Ohm Meter
4. Bulb Test

Now that you have your equipment set up let’s start troubleshooting.

Check out the Technical Service Bulletin

Before you spend your precious time and money, make sure your manufacturer has a recall campaign to address the defective exhaust back pressure control valve.

Suppose you find an ongoing program related to this error code; congratulations! If you need help, please follow the steps below.

Verify the Wirings & Connectors of the Solenoid

First, locate the exhaust back pressure valve. After checking the turbo pedestal’s front, you should identify it. Was it there? Great! It’s now time to inspect the wiring.

• Verify that the wiring is in good condition. Check for burnt or melted wires (the plastic portion of the cables).
• Connectors: Search for unusually colored (greenish) connectors to see if they have any corrosion or burns.

How to Fix: Use an electrical contact cleaner to clean the terminals. You can also use 91% rubbing alcohol if you don’t own it.

Attention: Before you begin cleaning, make sure that the terminals have dried completely. To make contact with terminals, use a dielectric silicon element.

Finally, you can reset the error code using the scanner. Your wiring and connectors may need to be fixed if it returns. If it does, you can use the following diagnostic techniques.

Check out the EBPV Power Supply Circuit

The pressure valve power supply must have 12V power. You can test it by putting a test bulb in it to see if it turns on.

The test bulb should be connected to the red terminal (12V battery’s negative part) and the ground circuit.

Scenario 1:

If the bulb does not light up, the circuit will likely have problems. If this is the case, you might need to replace the power supply circuit.

Scenario 2:

If the light flickers and lights up while you shake the harness, it is likely that the wiring is faulty. To solve the code, check and replace the wiring.

The Solenoid Circuit

The volt-ohmmeter is a quick and easy way to check the power supply circuit. These are the steps:

• Step 1: Disconnect the wire that connects the harness to the pressure control solenoid. There are two wires within the EBPV.
• Step 2: Check the DVOM meter to see if the solenoid has been closed or shorted.

You should replace your solenoid if it is damaged or open.

Make sure to check and replace your PCM

If the above doesn’t work, you may suspect your PCM is damaged or faulty. Seek expert assistance to inspect and replace the actual condition of your truck.

What is the cost of solving the error code P0475?

This error code’s fixing cost varies depending on the parts you must replace during the solving operation. Here is the price list for replacements.

• Electric Contact Cleaner Prices $5-10
• Prices for wiring & connectors range from $100 to $1000
• Prices for Exhaust Back Pressure Control Valve: $30-40
• The PCM costs around $500

If you are getting this service from an auto shop, you will need to add $75-150 per hour.

Common Mistakes in Solving the P0475 Code

You can make mistakes when solving the P0475, regardless of your level of knowledge. These standard errors are easy to avoid:

1. Never check TSB before doing anything with the engine
2. You don’t know how to use a digital Volt/Ohmmeter correctly

Additional comments regarding the P0475 code

Anyone can fix P0475. If you are in an awkward situation, don’t hesitate to contact your local auto shop for expert assistance.

Conclusion

I hope you found this article helpful enough to answer all your questions about DTC P0475. You can now see and replace the defective components to fix the code.

For troubleshooting errors such as P0475, ensure you have a scanner and volt-ohmmeter at your home. If you don’t have one, borrow one from the nearest auto shop.