Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part of the car that helps cool down the exhaust gases before they go back into the engine. It's like a small door that isn't opening or closing properly.
The EGR (Exhaust Gas Recirculation) cooler bypass control circuit is not performing within the expected range, affecting the engine's emission control system.
The P245B code indicates that the Engine Control Module (ECM) has detected a performance issue within the EGR cooler bypass control circuit on bank 1. This circuit is responsible for managing the flow of exhaust gases through the EGR cooler, which helps reduce NOx emissions by cooling the gases before they are reintroduced into the engine's intake manifold.
• Check Engine Light illuminated
• Reduced engine performance
• Increased emissions
• Faulty EGR cooler bypass valve
• Damaged wiring or connectors in the EGR bypass control circuit
• Malfunctioning EGR cooler temperature sensor
EGR: Exhaust Gas Recirculation
ECM: Engine Control Module
NOx: Nitrogen Oxides
• Use an OBD-II scanner to confirm the code.
• Inspect the EGR cooler bypass valve and its wiring for damage.
• Test the EGR cooler temperature sensor for proper operation.
• Replace the faulty EGR cooler bypass valve.
• Repair or replace damaged wiring or connectors.
• Replace the EGR cooler temperature sensor if faulty.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 1500
• Regular maintenance of the EGR system
• Use quality fuel to prevent deposits
• Ensure timely servicing of the vehicle
Engine Performance
• Do not ignore the Check Engine Light.
• Get the vehicle diagnosed by a professional.
• Avoid driving the vehicle aggressively until repaired.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with issues in diesel engines where EGR systems are more complex due to emission regulations.
Moderate – It should be addressed soon to prevent potential engine damage and increased emissions.
Operating a vehicle with a malfunctioning emission control system may violate local emissions laws.
• Engine at operating temperature
• Vehicle in idle or under light load
The EGR cooler and its bypass valve are typically located near the engine, connected to the exhaust manifold.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to increased emissions, reduced engine performance, and potential engine damage.
Q: Can I drive with a P245B code?
A: While the vehicle may still be drivable, it's advisable to have it repaired to avoid further issues.
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