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 is a problem with the part of the car that helps cool down the engine. It's like a fan that stops working, so the engine might get too hot.
The P24A9 code indicates that the control circuit for the EGR cooler's coolant pump is experiencing low voltage, which can affect the cooling process of the EGR system.
The Exhaust Gas Recirculation (EGR) cooler coolant pump is responsible for circulating coolant to reduce the temperature of the exhaust gases before they re-enter the engine. A 'Control Circuit Low' error suggests that the electrical circuit controlling this pump is not receiving enough voltage, potentially due to wiring issues, a faulty pump, or a malfunctioning control module.
• Check Engine Light is on
• Engine overheating
• Reduced engine performance
• Faulty EGR cooler coolant pump
• Damaged wiring or connectors in the pump circuit
• Faulty control module
EGR: Exhaust Gas Recirculation
Coolant: A fluid used to reduce the temperature of the engine
• Use a diagnostic scanner to verify the code.
• Inspect the wiring and connectors for damage.
• Test the EGR cooler coolant pump for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the EGR cooler coolant pump if faulty.
• Check and replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram 1500
• Regularly inspect and maintain the cooling system.
• Ensure electrical connections are secure and free from corrosion.
• Replace coolant as per manufacturer recommendations.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid driving the vehicle extensively until repaired.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been reported in vehicles with higher mileage where wear and tear on electrical components is common.
Moderate – Can lead to engine overheating if not addressed.
Driving with an unresolved EGR system issue may lead to increased emissions and potential legal penalties.
• Engine at operating temperature
• Vehicle at idle
The EGR cooler coolant pump is usually located near the engine, connected to the EGR cooler.
Q: Can I drive with a P24A9 code?
A: It's not recommended as it may cause engine overheating.
Q: How is the EGR cooler coolant pump tested?
A: A multimeter can be used to check the voltage and continuity of the pump circuit.
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