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 a sensor that measures the temperature of the car's battery is saying the temperature is too high.
The Battery Energy Control Module monitors the temperature of the battery through various sensors. If the temperature reading from Sensor 'B' is too high, it triggers this code.
The P1EE9 code is set when the Battery Energy Control Module detects that the temperature reading from Temperature Sensor 'B' is higher than the expected range. This could indicate a problem with the sensor itself, the wiring, or an actual high temperature condition in the battery.
• Check Engine Light is on
• Battery overheating warning
• Reduced battery performance
• Possible vehicle shutdown to prevent damage
• Faulty temperature sensor
• Wiring issues such as shorts or opens
• Actual high battery temperature
• Faulty Battery Energy Control Module
Battery Energy Control Module: A component that manages the battery's performance and safety.
Temperature Sensor: A device that measures temperature and sends the data to the vehicle's computer.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connections to Temperature Sensor 'B'
• Test the temperature sensor for proper operation
• Check for any signs of battery overheating
• Replace the faulty temperature sensor
• Repair or replace damaged wiring
• Ensure the battery cooling system is functioning properly
• Replace the Battery Energy Control Module if necessary
• OBD-II scanner
• Multimeter
• Thermal camera or thermometer
$100 - $500
Moderate
• Chevrolet Volt
• Chevrolet Bolt
• Cadillac ELR
• Regularly check battery temperature
• Ensure proper battery maintenance
• Keep the battery cooling system in good condition
Sensor Issue
• Do not ignore the warning light; address the issue promptly
• Avoid driving the vehicle if overheating is suspected
Check with your vehicle manufacturer as battery components may be covered under a specific warranty.
This code is more common in hybrid and electric vehicles due to their reliance on battery systems.
High – Address immediately to prevent battery damage or vehicle shutdown.
Driving with an overheating battery can be dangerous and may lead to vehicle damage.
• Vehicle at operating temperature
• Battery under load conditions
The temperature sensor is typically located near or within the battery pack.
Q: Can I drive with a P1EE9 code?
A: It's not recommended as it may indicate an overheating battery, which can be dangerous.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to battery damage or a potential vehicle shutdown due to overheating.
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