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 there's a problem with one of the computers in a hybrid or electric car that helps control the engine and battery. It's like when your tablet isn't working right, and it can't do its job properly.
The P0E43 code indicates an issue with the secondary powertrain control module in a hybrid or electric vehicle. This module is responsible for managing various functions of the vehicle's powertrain.
The Hybrid/EV Powertrain Control Module B is a secondary control unit in hybrid and electric vehicles that manages power distribution, charging, and other critical functions. A fault in this module can lead to inefficient power management and potential drivability issues.
• Check engine light illuminated
• Reduced power output
• Poor fuel economy
• Faulty powertrain control module B
• Wiring issues or poor connections
• Software glitches or outdated firmware
Powertrain: The components that generate power and deliver it to the road surface.
Control Module: An electronic device that manages various functions of the vehicle.
• Use an OBD-II scanner to confirm the code.
• Inspect wiring and connections to the control module.
• Check for software updates for the control module.
• Replace or repair faulty wiring.
• Update the control module's software.
• Replace the powertrain control module if necessary.
• OBD-II scanner
• Multimeter
• Diagnostic software
$300 - $1500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular software updates
• Routine maintenance checks
• Ensure proper battery management
Control Module Issue
• Avoid driving aggressively to prevent further issues.
• Schedule a diagnostic check with a professional.
Check with the manufacturer for warranty coverage on hybrid/EV components.
This code has become more common with the increased use of hybrid and electric vehicles. It often relates to software issues or component wear over time.
Moderate – It should be addressed soon to prevent potential drivability issues.
Ignoring this code may lead to reduced vehicle performance and efficiency. Always follow safety guidelines when working on hybrid/EV systems.
• Vehicle in 'ready' mode
• Battery fully charged
The powertrain control module B is typically located near the vehicle's battery or under the dashboard.
Q: Can I drive my car with this code?
A: It's possible to drive, but you may experience reduced performance. It's best to have it checked soon.
Q: Will this code affect my car's battery?
A: It could affect battery management, leading to inefficiencies or reduced lifespan.
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.