Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a part called the EGR cooler that helps control pollution. This code means that the EGR cooler isn't working as well as it should.
The EGR (Exhaust Gas Recirculation) cooler is supposed to cool down exhaust gases before they re-enter the engine. This code indicates that the cooler isn't doing its job properly.
The EGR cooler reduces the temperature of exhaust gases before they are recirculated into the engine to reduce NOx emissions. Code P2457 is triggered when the Engine Control Module (ECM) detects that the EGR cooler is not reducing the temperature of the exhaust gases as expected.
• Check Engine Light is on
• Reduced engine performance
• Increased emissions
• Clogged or restricted EGR cooler
• Faulty EGR cooler
• Problems with the EGR valve
EGR: Exhaust Gas Recirculation
ECM: Engine Control Module
• Check for any other related codes
• Inspect the EGR cooler for blockages or damage
• Test the EGR valve operation
• Clean or replace the EGR cooler
• Replace the EGR valve if faulty
• Check and repair any exhaust leaks
• OBD-II scanner
• Wrench set
• Multimeter
$300 - $800
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram 2500
• Regular maintenance of the EGR system
• Use quality fuel to reduce soot buildup
• Periodically check for exhaust leaks
Engine Performance
• Do not ignore the Check Engine Light
• Have the vehicle inspected by a professional
• Avoid heavy towing until the issue is resolved
Check your vehicle's warranty for coverage on emissions-related components.
This code has been more common in vehicles with higher mileage and those used for heavy-duty applications.
Moderate – While the vehicle may still be drivable, it can lead to increased emissions and reduced performance.
Ignoring emissions-related codes can lead to failing emissions tests and potential fines.
• Engine at operating temperature
• Vehicle under load
The EGR cooler is typically located near the engine, connected to the exhaust manifold and the EGR valve.
Q: Can I drive with a P2457 code?
A: It's possible, but not recommended as it can lead to increased emissions and reduced engine performance.
Q: How often should the EGR cooler be checked?
A: It should be checked during regular maintenance or if you notice performance issues.
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