Exhaust Pressure Control Valve Circuit Range/Performance
The P0476 code means the vehicle's onboard diagnostic system has detected: Exhaust Pressure Control Valve Circuit Range/Performance. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $150 - $600 (parts and labor)
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Common Symptoms
- Check Engine Light on
- Exhaust pressure not reaching target
- Poor DPF regeneration
- Reduced exhaust brake effectiveness
Probable Causes (Ranked by Likelihood)
- Exhaust pressure control valve sticking from soot Very High
- Valve diaphragm or actuator wear High
- Exhaust leak near control valve Moderate
- Incorrect valve calibration Low
Common Fixes by Vehicle
What techs usually find when diagnosing P0476 on specific vehicles — tap your vehicle for the fix and the exact part:
1999-2010 Ford F-250/Ford F-350/Ford Excursion Power Stroke Diesel hard DIY
P0476 is the exhaust pressure control valve reading out of range. On the Power Stroke this valve sits in the turbo pedestal/exhaust housing and sticks from soot and rust, particularly on trucks that idle a lot or do short trips. Inspect and clean the valve and its actuator linkage before replacing anything, and check the same EBP tube that causes P0472 - a blocked tube can make a working valve look faulty because the ECM never sees the pressure change it commanded. Clean the tube and valve together. Confirm the exact part for your year and engine with a retailer's fitment lookup or your VIN before ordering - these applications split by engine and build date.
Labor: 2-3 hoursFrequently Asked Questions
What causes the exhaust pressure valve to stick?
Soot and carbon buildup from diesel exhaust is the primary cause. The valve operates in a very harsh environment with high temperatures and particulate matter.
Can I clean the exhaust pressure control valve?
Sometimes. Remove the valve and soak in a solvent designed for carbon removal. If the valve is mechanically worn, replacement is needed.
How often should this valve be serviced?
There is no set interval, but diesel vehicles with high mileage (100,000+ miles) should have it inspected as part of routine exhaust system maintenance.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Command valve open/closed with scan tool. Monitor exhaust pressure response.
-
Inspect valve for soot buildup. Clean with appropriate cleaner.
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Check for exhaust leaks near the valve.
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If valve is clean but slow to respond, replace it.
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
P0476 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
Commonly Affected Vehicles
- 2010-2020 Ford F-350 (6.7L Diesel)
- 2012-2019 Chevrolet Silverado 3500 (6.6L Duramax)
- 2008-2018 Ram 3500 (6.7L Cummins)
- 2011-2020 GMC Sierra 3500 (6.6L Duramax)
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