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 for Motor B is being told by Motor A's computer to shut down for safety reasons.
The control module for Drive Motor 'A' has requested a safety shutdown of Drive Motor 'B'.
The P1E34 code is set when the control module for Drive Motor 'A' detects a condition that requires the shutdown of Drive Motor 'B' for safety. This could be due to an internal fault, overheating, or other safety-related issues detected by the system.
• Reduced vehicle performance
• Warning lights on the dashboard
• Inability to operate Drive Motor 'B'
• Faulty Drive Motor 'A' control module
• Communication error between control modules
• Overheating or fault in Drive Motor 'B'
Control Module: A computer in the vehicle that controls specific functions.
Drive Motor: An electric motor that powers the vehicle.
• Check for other related error codes.
• Inspect wiring and connections between the control modules.
• Test the functionality of Drive Motor 'A' and 'B' control modules.
• Repair or replace faulty wiring or connectors.
• Replace the Drive Motor 'A' control module if defective.
• Ensure Drive Motor 'B' is not overheating and address any cooling issues.
• OBD-II scanner
• Multimeter
• Diagnostic software for control modules
$200 - $1000
Difficult
• Chevrolet Volt
• Cadillac ELR
• Chevrolet Bolt
• Regular maintenance of the vehicle's cooling system.
• Ensure all software updates are applied to the vehicle's control systems.
• Regularly inspect and maintain electrical connections.
Control Module Communication Issue
• Do not continue driving if the vehicle is not performing well.
• Seek professional diagnostic and repair services.
• Keep up with regular vehicle maintenance to prevent such issues.
Check with the vehicle manufacturer for warranty coverage on control module issues.
This code is relatively uncommon and often related to specific hybrid or electric vehicles with advanced drive systems.
High – This issue can affect vehicle performance and safety, and should be addressed promptly.
Driving with this fault may be unsafe. Consult a professional mechanic to ensure vehicle safety.
• Vehicle in operation with both drive motors active.
• Monitoring of control module communication.
The control modules for Drive Motors 'A' and 'B' are typically located near the respective motors, often in the engine bay or under the vehicle.
Q: Can I drive my car with a P1E34 code?
A: It's not recommended to drive with this code active, as it indicates a potential safety issue with the drive motor system.
Q: What should I do if I get a P1E34 code?
A: Have your vehicle inspected by a qualified technician to diagnose and fix the issue.
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.