Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's coolant pump is spinning too fast or there's air in the cooling system. Think of it like a fan that's running too quickly or a straw with bubbles in it.
The code is triggered when the Engine Control Module (ECM) detects that the coolant pump is operating at a speed higher than expected, or there is air trapped in the cooling system.
The P2B86 code indicates that the coolant pump, designated as 'A', is operating at an overspeed condition. This can occur due to a malfunction in the pump itself, electrical issues, or the presence of air in the cooling system which can affect the pump's operation. The ECM monitors the pump's speed and the pressure within the cooling system to ensure optimal performance.
• Overheating engine
• Check engine light on
• Unusual noises from the engine compartment
• Faulty coolant pump
• Air trapped in the cooling system
• Electrical issues with the pump circuit
ECM: Engine Control Module
Coolant Pump: A device that circulates coolant through the engine to maintain optimal temperature
• Check for any visible leaks in the cooling system.
• Inspect the coolant pump and its electrical connections.
• Bleed the cooling system to remove any trapped air.
• Replace the faulty coolant pump.
• Repair or replace any damaged wiring or connectors.
• Perform a cooling system bleed to remove air.
• OBD-II scanner
• Wrench set
• Cooling system pressure tester
$150 - $500
Moderate
• Ford Focus
• Chevrolet Cruze
• Volkswagen Jetta
• Regularly check and maintain coolant levels.
• Inspect the cooling system for leaks.
• Replace coolant as per manufacturer recommendations.
Engine Performance
• Do not ignore the check engine light.
• Have your vehicle inspected by a professional if you notice overheating.
• Regular maintenance can prevent such issues.
Check with the vehicle manufacturer for warranty coverage on the coolant pump.
This code has been associated with issues in vehicles with electric coolant pumps, which are more sensitive to air in the system.
High – An overheating engine can cause severe damage if not addressed promptly.
Driving with an overheating engine can be dangerous and may lead to engine failure.
• Engine at operating temperature
• Cooling system fully pressurized
The coolant pump is typically located at the front of the engine, near the radiator.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to engine overheating, which may cause severe engine damage.
Q: Can I drive my car with this code?
A: It is not recommended to drive with this code active, as it indicates potential overheating risks.
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