Exhaust Gas Recirculation Cooling Valve Control Circuit Low
The P2426 code means the vehicle's onboard diagnostic system has detected: Exhaust Gas Recirculation Cooling Valve Control Circuit Low. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $200 - $1000 (parts and labor)
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What Are the Symptoms of P2426?
- Check Engine Light illuminated
- EGR cooler not functioning properly
- Elevated exhaust temperatures
- Reduced engine performance
- Possible coolant loss through EGR cooler
What Causes P2426? (Most Likely First)
- Short to ground in EGR cooler valve wiring Very High
- Failed EGR cooler valve solenoid (shorted) High
- Corroded connector causing low resistance Moderate
- ECM driver circuit fault Low
Can I Still Drive with P2426?
Short distances only. P2426 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
Can I drive with code P2426?
Short distances only. Monitor coolant levels closely as EGR cooler issues on diesel engines can lead to coolant loss and overheating.
What causes P2426?
Usually a shorted EGR cooler valve or damaged wiring. On diesel trucks, check for EGR cooler leaks which are a common related failure.
Is P2426 expensive to fix?
Costs range from $200 to $1000. The valve itself is moderate but if the EGR cooler is also leaking, full cooler replacement adds significant cost.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P2426?
-
Measure EGR cooler valve solenoid resistance
-
Check wiring for shorts to ground
-
Inspect connector for corrosion or water damage
-
Check EGR cooler for internal leaks (white smoke indicator)
-
Verify ECM output to the valve with a test light
Sources 1
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)
Which Vehicles Commonly Get P2426?
- 2008-2016 Ford F-350 6.4L Diesel
- 2011-2019 Ford F-350 6.7L Diesel
- 2010-2018 Ram 3500 6.7L Diesel
- 2012-2020 Chevrolet Silverado 2500 Duramax
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