Exhaust Pressure Sensor Circuit
The P0470 code means the vehicle's onboard diagnostic system has detected: Exhaust Pressure Sensor Circuit. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $80 - $400 (parts and labor)
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What Are the Symptoms of P0470?
- Check Engine Light on
- Reduced engine performance
- Turbo may not function correctly
- Possible DPF regeneration issues on diesel
What Causes P0470? (Most Likely First)
- Faulty exhaust pressure sensor Very High
- Clogged exhaust pressure sensor hose High
- Damaged wiring or connector Moderate
- PCM circuit fault Low
Can I Still Drive with P0470?
Short distances only. P0470 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does the exhaust pressure sensor measure?
It measures exhaust back pressure, which is critical for diesel particulate filter (DPF) monitoring and turbo efficiency calculations.
Is P0470 a diesel-only code?
Primarily yes, though some turbocharged gasoline engines also use exhaust pressure sensors for turbo control.
Can a clogged DPF cause P0470?
A clogged DPF causes high exhaust pressure, which is a normal reading. P0470 indicates a problem with the sensor circuit, not the pressure level itself.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P0470?
-
Read exhaust pressure sensor PID on scan tool. At key-on engine-off, it should read near atmospheric pressure.
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Locate the exhaust pressure sensor and inspect the pressure hose for blockage with soot or carbon.
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Check sensor connector for heat damage or corrosion.
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Measure sensor output voltage and compare to spec.
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
P0470 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:
Which Vehicles Commonly Get P0470?
- 2010-2020 Ford F-250 (6.7L Diesel)
- 2012-2019 Ram 2500 (6.7L Cummins)
- 2008-2018 Chevrolet Silverado 2500 (6.6L Duramax)
- 2011-2020 GMC Sierra 2500 (6.6L Duramax)
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