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 the pump that helps cool the electronics in a hybrid or electric car. It's like when a fan stops working on a computer, and it gets too hot.
The P0CEC code indicates that the control circuit for the electronics coolant pump in a hybrid or electric vehicle is experiencing a high voltage issue.
The electronics coolant pump is responsible for circulating coolant to manage the temperature of electronic components in hybrid and electric vehicles. A 'Control Circuit High' error suggests that the voltage in the control circuit is higher than expected, which could be due to a wiring issue, a faulty pump, or a problem with the control module.
• Warning light on the dashboard
• Overheating of electronic components
• Reduced vehicle performance
• Faulty electronics coolant pump
• Wiring issues such as open or short circuits
• Malfunctioning control module
Hybrid: A vehicle that uses both an internal combustion engine and electric motor.
Coolant Pump: A device that circulates coolant to manage the temperature of electronic components.
• Check for any fault codes related to the cooling system.
• Inspect the wiring and connectors for damage or corrosion.
• Test the electronics coolant pump for proper operation.
• Replace the faulty electronics coolant pump.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks of the cooling system
• Ensure proper coolant levels
• Inspect wiring for wear and tear
Electrical Circuit Issue
• Do not ignore the warning light; have the vehicle checked promptly.
• Avoid driving the vehicle in extreme temperatures until fixed.
Check with the vehicle manufacturer; cooling system components may be covered under the powertrain warranty.
This code has become more common with the increase in hybrid and electric vehicles, highlighting the importance of cooling system maintenance.
High – Failure to address this issue can lead to overheating and damage to electronic components.
Driving with an overheating system can cause further damage and may void warranty claims.
• Vehicle at operating temperature
• Electrical system fully operational
The electronics coolant pump is typically located near the battery or electronic control modules in the engine bay.
Q: Can I drive with a P0CEC code?
A: It's not recommended to drive with this code as it can lead to overheating and damage to the vehicle's electronics.
Q: How can I prevent this code from appearing?
A: Regular maintenance and checks of the cooling system can help prevent this issue.
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