Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a part in the car that helps control the flow of coolant, which is the liquid that keeps the engine from getting too hot. It's like a faucet that isn't working right, so the water can't flow properly.
The P2B59 code indicates that the engine control module (ECM) has detected an issue with the electrical circuit that controls the engine coolant flow control valve. This valve helps manage the flow of coolant through the engine to maintain optimal temperature.
The engine coolant flow control valve is responsible for regulating the flow of coolant through the engine's cooling system. An open circuit or fault in this control circuit can prevent the valve from operating correctly, leading to potential overheating or inefficient engine operation.
• Engine overheating
• Poor engine performance
• Check Engine Light illuminated
• Faulty engine coolant flow control valve
• Damaged or corroded wiring or connectors
• Faulty ECM or control module
ECM: Engine Control Module
Coolant: A fluid that absorbs and dissipates heat from the engine
• Inspect the wiring and connectors for damage or corrosion.
• Test the engine coolant flow control valve for proper operation.
• Check the ECM for any additional error codes or faults.
• Replace the engine coolant flow control valve if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Chevrolet Malibu
• Buick LaCrosse
• GMC Terrain
• Regular maintenance of the cooling system
• Check and replace coolant as needed
• Inspect wiring and connectors periodically
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle if it shows signs of overheating.
Check with the vehicle manufacturer for warranty coverage on engine components.
This code has been associated with issues in vehicles with complex cooling systems, particularly those with advanced thermal management technologies.
High – This issue can lead to engine overheating and potential damage if not addressed promptly.
Driving with an overheating engine can cause severe damage and is unsafe. Address this issue as soon as possible.
• Engine at operating temperature
• Vehicle stationary with engine running
The engine coolant flow control valve is typically located near the engine block and is part of the cooling system.
Q: Can I drive with a P2B59 code?
A: It's not advisable to drive with this code active, as it can lead to engine overheating.
Q: How do I reset the Check Engine Light after fixing the issue?
A: Use an OBD-II scanner to clear the code after the repair is completed.
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