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 car's computer found a problem with the part that helps keep the battery cool. It's like a valve that opens and closes to let coolant in, and the computer thinks it's not working right.
The P0CE3 code is triggered when the powertrain control module (PCM) detects a high voltage condition in the control circuit of the Hybrid/EV Battery Pack Coolant Control Valve A.
The Hybrid/EV Battery Pack Coolant Control Valve A is responsible for regulating the flow of coolant to the battery pack to maintain optimal operating temperature. A high signal in the control circuit indicates that there may be an electrical issue such as an open circuit, short to voltage, or a failed control valve.
• Check Engine Light is on
• Overheating of the battery pack
• Reduced vehicle performance
• Faulty coolant control valve
• Open or shorted control circuit wiring
• Faulty PCM or control module
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the coolant control valve for proper operation.
• Replace the faulty coolant control valve.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks
• Ensure proper coolant levels
• Inspect electrical connections periodically
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional.
• Avoid driving long distances until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on hybrid system components.
This code has become more common with the increased use of hybrid and electric vehicles, as they rely heavily on battery cooling systems.
Moderate – It is important to address this issue to prevent battery damage and maintain vehicle performance.
Driving with this code may lead to battery damage and reduced vehicle performance. It is advisable to address it promptly.
• Vehicle must be in a safe, flat area.
• Engine should be off and cool before inspection.
The coolant control valve is typically located near the battery pack or within the engine compartment, depending on the vehicle model.
Q: Can I drive my car with the P0CE3 code?
A: It's not recommended to drive for long distances with this code, as it may lead to battery overheating.
Q: How do I reset the Check Engine Light after repairs?
A: After repairs, you can use an OBD-II scanner to clear the code and reset the Check Engine Light.
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