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 way your car's computer is checking the battery's voltage. Imagine if your game console couldn't tell how much battery life was left - that's what's happening with your car.
The vehicle's computer has detected an issue with the voltage sensing circuit for the hybrid or electric vehicle battery pack.
The P0E44 code is triggered when the Powertrain Control Module (PCM) or Battery Energy Control Module (BECM) detects a malfunction in the voltage sensing circuit for the battery pack. This could be due to a wiring issue, a faulty sensor, or a problem with the battery pack itself.
• Check Engine Light is on
• Reduced fuel efficiency
• Limited power or performance
• Faulty battery voltage sensor
• Damaged wiring or connectors
• Faulty Battery Energy Control Module (BECM)
PCM: Powertrain Control Module
BECM: Battery Energy Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect battery voltage sensor and related wiring.
• Test the Battery Energy Control Module (BECM).
• Replace the faulty battery voltage sensor.
• Repair or replace damaged wiring or connectors.
• Replace the Battery Energy Control Module (BECM) if necessary.
• OBD-II scanner
• Multimeter
• Wiring repair kit
$200 - $1000
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks
• Ensure battery connections are secure
• Avoid overcharging the battery
Sensor Issue
• Do not ignore the Check Engine Light.
• Get the vehicle inspected by a professional.
• Avoid using the car for long trips until fixed.
Check if the battery pack or related components are covered under the vehicle's warranty.
This code has become more common with the increased use of hybrid and electric vehicles, highlighting the importance of battery management systems.
Moderate – It is important to address this issue to prevent further damage and maintain vehicle performance.
Ignoring this code can lead to reduced vehicle performance and may affect emissions compliance.
• Vehicle at operating temperature
• Battery pack fully charged
The battery voltage sensor is typically located within or near the hybrid/EV battery pack.
Q: Can I drive my car with a P0E44 code?
A: It's possible, but not recommended as it may lead to reduced performance and further damage.
Q: How can I prevent this code from occurring?
A: Regular maintenance and checks of the battery system can help prevent this issue.
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