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 has detected that the temperature of the pump used to cool the air going into the engine is too high.
The charge air cooler coolant pump is responsible for circulating coolant to cool the air that enters the engine. If the temperature of this pump exceeds a certain threshold, it can trigger the P15E6 code.
The P15E6 code is set when the Engine Control Module (ECM) detects that the temperature of the charge air cooler coolant pump has exceeded a predefined threshold. This could indicate a malfunction in the pump, a blockage in the coolant line, or insufficient coolant levels.
• Check Engine Light is on
• Reduced engine performance
• Overheating of the engine
• Malfunctioning charge air cooler coolant pump
• Blockage in the coolant line
• Low coolant level
Charge Air Cooler: A device used to cool air compressed by a turbocharger or supercharger before it enters the engine.
Coolant Pump: A pump that circulates coolant throughout the engine to remove excess heat.
• Check the coolant level and top up if necessary.
• Inspect the coolant pump for any signs of damage or malfunction.
• Check for blockages in the coolant lines.
• Replace the charge air cooler coolant pump if faulty.
• Clear any blockages in the coolant lines.
• Refill and bleed the coolant system to ensure proper circulation.
• OBD-II scanner
• Coolant system pressure tester
• Basic hand tools
$150 - $500
Moderate
• BMW 3 Series
• Audi A4
• Mercedes-Benz C-Class
• Regularly check and maintain coolant levels.
• Inspect the coolant system for leaks or blockages.
• Perform routine maintenance on the charge air cooler system.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid heavy engine loads until the issue is resolved.
Check with your vehicle manufacturer for specific warranty coverage related to the cooling system.
This code has become more common in vehicles with turbocharged engines that use charge air cooling systems.
Moderate – It is important to address this issue to prevent potential engine damage.
Driving with an overheating engine can cause severe damage and may be unsafe. Address the issue promptly.
• Engine at operating temperature
• Vehicle in a safe and controlled environment
The charge air cooler coolant pump is typically located near the front of the engine bay, connected to the charge air cooler system.
Q: Can I drive with a P15E6 code?
A: It's not recommended to drive for extended periods with this code as it may lead to engine overheating.
Q: How can I prevent this code from appearing?
A: Regular maintenance of the coolant system and ensuring proper coolant levels can help prevent this code.
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