Exhaust Pressure Control Valve High Input
Can I Drive?
Short Distances Only
DIY Difficulty
intermediate
Estimated Cost
$200-$900
What does POWERSTROKE-P0478-73 mean?
The POWERSTROKE-P0478-73 (Power Stroke) diesel fault code means: Exhaust Pressure Control Valve High Input. This is a moderate severity code.
Common Symptoms
- CEL
- Stuck EBPV
Probable Causes (Ranked by Likelihood)
- EBPV stuck closed Likely
- Failed EBPV control solenoid Likely
Step-by-Step Diagnostic Procedure
Actuate EBPV with scan tool.
Clean or replace.
Frequently Asked Questions
What is P0478 on a 7.3L Power Stroke?
P0478 on a 7.3L Power Stroke (1994-2003) indicates: Exhaust Pressure Control Valve High Input. This is a known diagnostic trouble code on this engine family and typically points to the causes listed above.
Can I drive with P0478 on my Power Stroke?
Only drive short distances to get to a repair facility. Continued operation may cause further damage.
How much does it cost to fix P0478?
Repair cost is typically $200-$900 depending on the underlying cause and whether you DIY or use a shop. Diagnostic time alone runs $100-$180 at most independent diesel shops.