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 part of the car that helps keep the air going into the engine cool is getting too hot.
The charge air cooler is used to cool the air before it enters the engine. This code indicates that the control module for the secondary coolant pump is overheating.
The P2CB5 code is triggered when the Engine Control Module (ECM) detects that the control module for the charge air cooler's secondary coolant pump is operating at a temperature above its normal operating range. This can affect the efficiency of the charge air cooler and potentially lead to engine performance issues.
• Check engine light is on
• Reduced engine performance
• Engine overheating
• Faulty charge air cooler coolant pump
• Blocked coolant passages
• Faulty temperature sensor
Charge Air Cooler: A device used to cool air before it enters the engine.
Coolant Pump: A pump that circulates coolant to remove excess heat from engine components.
• Use an OBD-II scanner to confirm the code.
• Inspect the charge air cooler coolant pump for signs of damage or blockage.
• Check the wiring and connections to the control module.
• Replace the faulty coolant pump.
• Clear any blockages in the coolant passages.
• Replace or repair any damaged wiring or connections.
• OBD-II scanner
• Multimeter
• Coolant system pressure tester
$200 - $500
Moderate
• BMW 3 Series
• Audi A4
• Mercedes-Benz C-Class
• Regular maintenance of the cooling system
• Ensure coolant levels are adequate
• Inspect coolant hoses for leaks or damage
Engine Performance
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional if you notice performance issues.
Check with your vehicle manufacturer for warranty coverage on engine components.
This code is relatively uncommon and is typically associated with vehicles that have advanced cooling systems for turbocharged engines.
Moderate – It should be addressed soon to prevent potential engine damage.
Driving with an overheating engine can cause severe damage and is unsafe.
• Engine running at normal operating temperature
• Vehicle in a stationary position
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 P2CB5 code?
A: It's not recommended to drive for long periods with this code as it can lead to engine overheating.
Q: How do I reset the P2CB5 code?
A: After fixing the issue, you can reset the code using an OBD-II scanner.
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