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 computer in your car found a problem with the part that helps keep the hybrid or electric car battery cool. It's like a fan not working properly to keep your computer from overheating.
The P0E1C code indicates that the control circuit for the second coolant pump in a hybrid or electric vehicle's battery pack is experiencing a high voltage condition.
The P0E1C code is triggered when the Powertrain Control Module (PCM) or Battery Energy Control Module (BECM) detects a higher than expected voltage in the control circuit of the Battery Pack Coolant Pump B. This may be due to an open circuit, a short to voltage, or a failure in the pump or its control circuit.
• Check Engine Light is on
• Battery overheating warnings
• Reduced vehicle performance
• Unusual noises from the battery area
• Faulty Battery Pack Coolant Pump B
• Open or shorted wiring in the pump circuit
• Faulty PCM or BECM
• Poor electrical connection in the circuit
PCM: Powertrain Control Module
BECM: Battery Energy Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the Battery Pack Coolant Pump B for proper operation.
• Check the voltage and ground signals at the pump connector.
• Repair or replace damaged wiring or connectors.
• Replace the Battery Pack Coolant Pump B if faulty.
• Replace or reprogram the PCM or BECM if necessary.
• OBD-II Scanner
• Multimeter
• Basic hand tools
$300 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect and maintain battery cooling systems.
• Ensure all electrical connections are secure.
• Perform routine checks for error codes.
Electrical Circuit Issue
• Avoid driving the vehicle until repaired to prevent battery damage.
• Consult a certified hybrid/EV technician for diagnosis and repair.
Repairs may be covered under the vehicle's hybrid system warranty. Check with the manufacturer.
This code has become more common as hybrid and electric vehicles have increased in popularity, highlighting the importance of battery cooling systems.
High – Immediate attention is required to prevent battery damage.
Driving with this code may lead to battery damage and potential safety hazards.
• Vehicle at operating temperature
• Battery cooling system active
The Battery Pack Coolant Pump B is typically located near the vehicle's battery pack, often in the rear of the vehicle.
Q: Can I drive my car with this code?
A: It's not recommended to drive with this code as it may cause battery damage.
Q: How can I prevent this issue?
A: Regular maintenance and inspections of the battery cooling system can help prevent this issue.
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