Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This means that the computer in the car is getting too much electricity from the part that controls one of the car's electric motors.
The P1E55 code indicates that the voltage level in the circuit for the Drive Motor 'B' Control Module is higher than expected, which can affect the performance of the electric drive system.
The Drive Motor 'B' Control Module monitors the voltage levels in its circuit to ensure they are within a specified range. If the voltage exceeds this range, it triggers the P1E55 code. High voltage can lead to potential damage to the control module or the motor itself.
• Illuminated check engine light
• Reduced vehicle performance
• Unusual noises from the electric motor
• Faulty Drive Motor 'B' Control Module
• Wiring issues such as shorts to power or open circuits
• Faulty voltage regulator
Control Module: A computer that manages specific functions in a vehicle.
Voltage Regulator: A device that maintains a constant voltage level in an electrical circuit.
• Use an OBD-II scanner to confirm the code.
• Inspect wiring and connectors for damage or corrosion.
• Test the voltage regulator and control module.
• Repair or replace damaged wiring or connectors.
• Replace the Drive Motor 'B' Control Module if faulty.
• Replace the voltage regulator if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Chevrolet Volt
• Chevrolet Bolt EV
• Cadillac ELR
• Regularly inspect and maintain electrical connections.
• Ensure the vehicle's charging system is functioning properly.
• Avoid overloading the vehicle's electrical system.
Electrical System Issue
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional if you notice performance issues.
Check with the manufacturer for warranty coverage on the drive motor control module.
This code has been reported in electric and hybrid vehicles where voltage regulation is critical for performance.
Moderate – It's important to address this issue to prevent potential damage to the electric drive system.
Driving with this code may lead to reduced performance and efficiency. Ensure repairs are conducted by a qualified technician.
• Vehicle at operating temperature
• All electrical accessories turned off
The Drive Motor 'B' Control Module is typically located near the electric motor it controls, often in the engine or motor compartment.
Q: Can I drive with the P1E55 code?
A: It's not recommended to drive for extended periods with this code, as it may lead to further damage.
Q: What happens if I ignore this code?
A: Ignoring this code could result in reduced vehicle performance and potential damage to the motor or control module.
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