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 detected a problem with the pump that helps keep the battery cool. It's like when a fan stops working on a hot day.
The P0C48 code indicates that there is a low voltage condition in the control circuit for the battery pack coolant pump, which is responsible for cooling the hybrid or electric vehicle's battery.
The P0C48 code is triggered when the Powertrain Control Module (PCM) or Battery Energy Control Module (BECM) detects a low voltage condition in the control circuit of the battery pack coolant pump 'A'. This pump is essential for maintaining the optimal temperature of the battery pack in hybrid and electric vehicles. A low voltage condition could indicate a problem with the wiring, connectors, or the pump itself.
• Check Engine Light is on
• Reduced battery performance
• Overheating of the battery pack
• Faulty battery pack coolant pump
• Damaged or corroded wiring or connectors
• Faulty control module
PCM: Powertrain Control Module
BECM: Battery Energy Control Module
• Check for any blown fuses related to the coolant pump circuit.
• Inspect the wiring and connectors for damage or corrosion.
• Test the battery pack coolant pump for proper operation.
• Replace the faulty coolant pump.
• Repair or replace damaged wiring or connectors.
• Replace the control module if necessary.
• Multimeter
• OBD-II scanner
• Basic hand tools
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect the coolant pump and wiring.
• Ensure proper coolant levels are maintained.
• Schedule regular maintenance checks.
Control Circuit Issue
• Avoid driving the vehicle excessively until repaired.
• Monitor battery temperature if possible.
• Seek professional diagnostics and repair.
Check with the vehicle manufacturer for warranty coverage on hybrid/EV components.
This code has become more common as hybrid and electric vehicles have increased in popularity, highlighting the importance of battery cooling systems.
Moderate – It's important to address this issue to prevent battery damage.
Ignoring this issue could lead to battery damage, which might not be covered under warranty if not addressed promptly.
• Vehicle in ready mode
• Battery pack at operating temperature
The battery pack coolant pump is typically located near the battery pack, often in the rear or under the vehicle.
Q: Can I drive with a P0C48 code?
A: It's not recommended to drive extensively with this code, as it can lead to battery overheating.
Q: How can I prevent this code from appearing?
A: Regular maintenance and inspections of the cooling system can help prevent this issue.
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