Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is getting a weak signal from the pump that helps cool the engine. It's like when your phone has a weak Wi-Fi signal.
The P24AC code is triggered when the Engine Control Module (ECM) detects a low voltage signal from the EGR cooler coolant pump feedback circuit.
The EGR cooler coolant pump is responsible for circulating coolant through the EGR cooler to reduce exhaust gas temperatures. The ECM monitors the feedback circuit of the pump to ensure it is operating correctly. A low signal indicates a potential issue with the pump or its circuit.
• Check Engine Light illuminated
• Poor engine performance
• Increased emissions
• Faulty EGR cooler coolant pump
• Damaged wiring or connectors in the feedback circuit
• Faulty ECM
EGR: Exhaust Gas Recirculation
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the P24AC code.
• Inspect the EGR cooler coolant pump and its wiring for damage.
• Test the voltage and continuity of the feedback circuit.
• Replace the EGR cooler coolant pump if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Ram 1500
• Regular maintenance of the EGR system
• Periodic inspection of wiring and connectors
• Using quality coolant
Sensor Issue
• Avoid driving long distances until repaired.
• Have a professional diagnose the issue promptly.
Check vehicle warranty for coverage on emissions-related components.
This code has been more commonly reported in vehicles with higher mileage or those that frequently tow heavy loads.
Moderate – Addressing this issue promptly can prevent further engine damage.
Ignoring emissions-related codes may lead to failing emissions tests and potential fines.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The EGR cooler coolant pump is typically located near the EGR cooler, often at the front of the engine bay.
Q: Can I drive with a P24AC code?
A: It's not recommended to drive for long periods with this code as it can lead to engine damage.
Q: How can I prevent this code from occurring?
A: Regular maintenance and inspections of the EGR system can help prevent this issue.
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