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 sensor that tells the car's computer where the valve is that helps keep the battery cool. It's like when a thermometer isn't working right, so you can't tell how hot or cold it is.
The P0CE6 code is triggered when the vehicle's control module detects a low voltage signal from the battery pack coolant control valve position sensor circuit.
The hybrid or electric vehicle's battery pack requires a cooling system to maintain optimal operating temperatures. The coolant control valve regulates the flow of coolant, and its position is monitored by a sensor. If the sensor circuit reads a voltage lower than expected, this code is set.
• Check Engine Light illuminated
• Reduced battery performance
• Overheating of the battery pack
• Faulty coolant control valve position sensor
• Wiring issues such as shorts or open circuits in the sensor circuit
• Malfunctioning control module
Coolant: A liquid used to keep the engine or battery from overheating.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the coolant control valve position sensor for proper operation.
• Replace the faulty coolant control valve position sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks on the cooling system
• Ensure proper coolant levels
• Inspect wiring and connectors periodically
Sensor Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Avoid driving the vehicle if you notice overheating issues.
Check with the vehicle manufacturer for warranty coverage on hybrid/EV components.
This code has become more common with the increased use of hybrid and electric vehicles, as proper battery cooling is critical for performance and longevity.
Moderate – Addressing this issue promptly can prevent further damage to the battery pack.
Ignoring this issue could lead to battery damage or reduced vehicle performance, which may affect safety.
• Vehicle should be at operating temperature.
• Ensure the cooling system is functioning.
The coolant control valve is typically located near the battery pack, within the vehicle's cooling system.
Q: Can I drive with a P0CE6 code?
A: It's not recommended to drive for long periods with this code, as it may lead to battery overheating.
Q: How do I reset the P0CE6 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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