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 a pump in your car that helps keep the engine cool is using too much power and has been turned off to prevent damage.
The P15F3 code indicates that the second charge air cooler coolant pump is drawing more current than expected, causing the system to shut it off to prevent damage.
The charge air cooler coolant pump 2 is responsible for circulating coolant to the charge air cooler, which helps reduce the temperature of the air entering the engine. An overcurrent condition suggests that the pump is experiencing resistance or a short circuit, causing it to draw excessive electrical current.
• Check engine light is on
• Reduced engine performance
• Engine overheating
• Faulty charge air cooler coolant pump
• Electrical short in the pump circuit
• Obstruction in the coolant system
Charge Air Cooler: A device that cools the air compressed by the turbocharger before it enters the engine.
Coolant Pump: A pump that circulates coolant through the engine and cooling system to regulate temperature.
• Check for any stored codes and freeze frame data
• Inspect the charge air cooler coolant pump and its wiring
• Test the electrical circuit for shorts or high resistance
• Replace the faulty charge air cooler coolant pump
• Repair or replace damaged wiring
• Clear any obstructions in the coolant system
• OBD-II scanner
• Multimeter
• Coolant system pressure tester
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect coolant levels
• Perform routine maintenance on the cooling system
• Check for leaks or blockages in the system
Engine Performance
• Avoid driving the vehicle until the issue is resolved to prevent engine damage
• Consult with a professional mechanic for accurate diagnosis
Check with your vehicle manufacturer for warranty coverage on cooling system components.
This code has been reported in vehicles with turbocharged engines where cooling system components are under increased stress.
High – Continued driving with this issue can lead to engine damage due to overheating.
Driving with a malfunctioning cooling system can lead to engine failure and is not recommended.
• Engine running
• Coolant system under pressure
The charge air cooler coolant pump is typically located near the front of the engine bay, connected to the charge air cooler.
Q: Can I drive with a P15F3 code?
A: It's not recommended to drive with this code as it can cause engine overheating and damage.
Q: How can I prevent this code from appearing?
A: Regular maintenance of the cooling system and checking for leaks or blockages can help prevent this issue.
Budget · Enhanced code reader
A wired color-screen reader with readiness hotkeys, live data, code definitions, and data logging.
A dependable first-pass scanner for verifying the code and checking live data or readiness monitors.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for voltage, continuity, and basic electrical checks while narrowing down the fault.
View on Amazon
Universal · Socket set
A practical metric and SAE socket set for many diagnostic teardowns and component replacements.
Useful for common under-hood access and removal work during diagnosis or repair.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.