• Check Engine Light is on
• Vehicle may not start
• Reduced fuel efficiency
• Faulty Battery Energy Control Module
• Open or shorted CAN bus wires
• Poor electrical connection in the CAN bus circuit
CAN bus: A robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other.
BECM: Battery Energy Control Module, responsible for managing the battery system in a vehicle.
• U0100
• U0111
Your car's computer can't talk to the battery sensor, like when you can't hear your friend on a walkie-talkie.
This code indicates a loss of communication with the battery energy control module.
The U0112 code is set when the vehicle's primary control module, such as the Powertrain Control Module (PCM), loses communication with the Battery Energy Control Module (BECM). This can be due to a network communication error in the Controller Area Network (CAN) bus.
• Check for other codes that may indicate a specific issue.
• Inspect CAN bus wiring for damage or disconnection.
• Test the Battery Energy Control Module for faults.
• Repair or replace damaged CAN bus wiring.
• Reconnect any loose connections in the CAN bus circuit.
• Replace the Battery Energy Control Module if faulty.
• OBD-II scanner
• Multimeter
• CAN bus diagnostic tool
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect electrical connections.
• Avoid water exposure to electrical components.
• Perform routine vehicle maintenance checks.
Communication Error
• Do not ignore the warning light; seek professional help.
• Avoid driving the vehicle until the issue is resolved.
• Regularly check your vehicle's electrical systems.
Check with your vehicle manufacturer for warranty coverage on electrical components.
This code has become more common with the increased use of hybrid and electric vehicles, which rely heavily on battery management systems.
High – This issue can prevent your vehicle from starting or operating efficiently.
Driving with this code may lead to vehicle performance issues and is not recommended. Always address warning lights promptly.
• Vehicle ignition on
• Battery fully charged
The Battery Energy Control Module is typically located near the vehicle's battery or under the rear seat in hybrid/electric vehicles.
Q: What does U0112 mean?
A: It means the car's main computer can't communicate with the battery control module.
Q: Can I drive with code U0112?
A: It's not recommended to drive as it may cause performance issues or prevent the car from starting.
