The P0475 code in a 7.3 Powerstroke engine indicates an issue with the Exhaust Pressure Control Valve (EPCV). This valve plays a crucial role in managing exhaust back pressure, especially during cold starts. Let's explore the causes, symptoms, and solutions for this error code.

P0475 Code 7.3 Powerstroke

The P0475 code refers to a malfunction in the Exhaust Pressure Control Valve 'A'. This valve helps regulate back pressure to improve engine performance and warm-up times. A fault in this system can lead to poor engine performance and other issues.

Common Symptoms

  • Illuminated Check Engine Light
  • Poor engine performance
  • Engine takes too long to warm up
  • Irregular RPMs
  • Engine won't start in rare cases

Causes of the P0475 Code

  • Faulty Exhaust Pressure Control Valve
  • Damaged or corroded wiring and connectors
  • Malfunctioning Powertrain Control Module (PCM)
  • Shorted or open EBPV harness

How to Fix the P0475 Code

Step 1: Inspect Wiring and Connectors

  • Check for burnt or melted wires
  • Look for corroded connectors
  • Clean terminals with electrical contact cleaner

Step 2: Test the EBPV Power Supply Circuit

  • Use a test light bulb to check for 12V power
  • Replace the circuit if the bulb does not illuminate

Step 3: Check the Solenoid Circuit

  • Use a Digital Volt/Ohm Meter (DVOM) to test the solenoid
  • Replace the solenoid if it is open or shorted

Step 4: Replace the PCM (if necessary)

  • Consult a professional mechanic for PCM replacement

Cost of Repairs

ComponentEstimated Cost
Electrical Contact Cleaner$5 - $10
Wiring and Connectors$100 - $1000
Exhaust Pressure Control Valve$30 - $40
Powertrain Control Module (PCM)$500

FAQs About P0475 Code 7.3 Powerstroke

    • What is the main cause of the P0475 code?
      The most common cause is a faulty Exhaust Pressure Control Valve.
    • Can I drive with a P0475 code?
      It is not recommended as it can lead to further engine damage.
    • How do I reset the P0475 code?
      Use an OBD-II scanner to clear the code after repairs.