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 the car's computer is having trouble reading the voltage from a sensor that checks how much power is going to one of the car's electric motors.
The car's control module is detecting an issue with the voltage sensor circuit related to the Drive Motor 'B'. It is not reading the expected voltage range.
The P1E39 code indicates that the Drive Motor 'B' Control Module is experiencing a problem with the voltage sensor circuit. This could mean that the voltage is outside the expected range or that the sensor is not performing correctly. This might affect the performance of the electric motor.
• Check Engine Light is on
• Reduced vehicle performance
• Possible electric motor issues
• Faulty voltage sensor
• Wiring issues in the voltage sensor circuit
• Failed Drive Motor 'B' Control Module
Voltage Sensor: A device that measures the electrical voltage in a circuit.
Control Module: An electronic device that controls various functions in the vehicle.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the voltage sensor.
• Test the voltage sensor for proper operation.
• Replace the faulty voltage sensor.
• Repair or replace damaged wiring.
• Replace the Drive Motor 'B' Control Module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Chevrolet Volt
• Chevrolet Bolt EV
• Nissan Leaf
• Regular maintenance checks
• Ensure proper electrical connections
• Avoid harsh driving conditions
Sensor Issue
• Do not ignore the Check Engine Light.
• Consult with a professional mechanic for accurate diagnosis.
• Avoid driving the vehicle aggressively until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on the control module and sensors.
This code is common in vehicles with electric drive systems and is often related to sensor or wiring issues.
Moderate – It is important to address this issue to avoid potential performance problems.
Driving with a malfunctioning electric motor control module may lead to reduced performance and should be addressed promptly.
• Vehicle at operating temperature
• Battery fully charged
The voltage sensor is typically located near the Drive Motor 'B' or integrated within the control module.
Q: Can I drive with the P1E39 code?
A: It's possible to drive short distances, but it's best to get it checked soon to avoid further issues.
Q: Is this code specific to electric vehicles?
A: Yes, this code is typically associated with vehicles that have electric drive systems.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.