Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car has a special pump that helps cool the air going into the engine. This pump got too hot and stopped working to protect itself.
The charge air cooler coolant pump 2 is responsible for circulating coolant to cool the air entering the engine. This code indicates that the pump has shut off due to internal temperatures exceeding safe levels.
The P15F1 code is triggered when the Engine Control Module (ECM) detects that the internal temperature of the second charge air cooler coolant pump is too high, causing it to shut down to prevent damage. This can affect the engine's performance as the intake air may not be adequately cooled.
• Reduced engine performance
• Check engine light on
• Overheating of the engine
• Faulty charge air cooler coolant pump
• Blocked coolant passages
• Low coolant level
ECM: Engine Control Module
Coolant: A fluid used to transfer heat away from the engine
• Check the coolant level and top up if necessary.
• Inspect the coolant pump for proper operation.
• Examine coolant passages for blockages.
• Replace the faulty coolant pump.
• Flush the cooling system to remove blockages.
• Refill and bleed the cooling system.
• OBD-II scanner
• Coolant system pressure tester
• Basic hand tools
$200 - $600
Moderate
• BMW 3 Series
• Audi A4
• Mercedes-Benz C-Class
• Regularly check and maintain coolant levels.
• Perform routine cooling system flushes.
• Inspect cooling system components periodically.
Engine Performance
• Do not ignore the check engine light.
• Have the cooling system inspected by a professional.
• Avoid driving the vehicle if overheating occurs.
Check with your vehicle manufacturer for specific warranty coverage on cooling system components.
This code has been more common in turbocharged vehicles where cooling of intake air is critical for performance.
Moderate – Addressing this issue promptly can prevent engine damage.
Driving with an overheating engine can cause severe damage and may not be covered under warranty if ignored.
• Engine at operating temperature
• Vehicle in idle or low-speed operation
The charge air cooler coolant pump is typically located near the front of the engine bay, close to the radiator.
Q: Can I drive with a P15F1 code?
A: It's not recommended to drive with this code active, as it can lead to engine overheating and damage.
Q: How can I prevent this issue?
A: Regular maintenance of the cooling system and ensuring proper coolant levels can help prevent this issue.
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