Eliminate P0478 Soft Codes After Your EBPV Delete — The Right Way
When removing or deleting the Exhaust Back Pressure Valve (EBPV) on your 1999–2003 7.3L Powerstroke, the PCM detects an open circuit from the missing actuator and stores a soft diagnostic trouble code (P0478).
Even if it doesn’t trigger a check engine light, the code remains stored and can cause confusion during diagnostics or inspections.
This EBP Connector Plug is the clean, correct solution — designed to simulate the factory actuator and prevent the P0478 soft code entirely.