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 system that keeps you safe from high voltage electricity isn't working right now.
The P1B47 code is triggered when the vehicle's control module detects that the high voltage safety system is not functioning as intended.
The high voltage safety system in hybrid and electric vehicles is designed to protect occupants and service personnel from the dangers of high voltage electrical systems. This code indicates that there is a fault in this safety system, which could be due to a malfunctioning sensor, wiring issue, or a problem with the control module.
• Warning light on the dashboard
• Inability to start the vehicle
• Reduced vehicle performance
• Faulty high voltage safety sensors
• Damaged wiring or connectors
• Malfunctioning control module
High Voltage: Electrical systems with voltage levels that can be dangerous to humans.
Control Module: A computer in the vehicle that manages various systems.
• Check for any other related codes.
• Inspect the high voltage safety sensors and wiring.
• Test the control module functionality.
• Replace faulty sensors.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Wiring diagram
$200 - $1000
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regular maintenance checks
• Ensure proper handling of high voltage components
• Promptly address warning lights
Safety System Issue
• Do not attempt to repair high voltage systems yourself.
• Consult a professional mechanic for diagnosis and repair.
Check with your vehicle manufacturer for warranty coverage on hybrid or electric system components.
This code has become more common with the increased use of hybrid and electric vehicles, which have more complex high voltage systems.
High – This issue can affect vehicle safety and should be addressed promptly.
Working with high voltage systems can be dangerous. Always follow safety guidelines and consult professionals.
• Vehicle in 'Ready' mode
• All electrical systems active
The high voltage safety components are typically located near the battery pack and throughout the vehicle's electrical system.
Q: Can I drive with the P1B47 code?
A: It's not recommended to drive with this code, as it indicates a safety system issue.
Q: What happens if I ignore this code?
A: Ignoring this code could lead to safety risks, as the high voltage safety system may not protect you in case of an electrical fault.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Body and airbag faults often need a scanner that can access more than generic powertrain codes.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking power, ground, and continuity in body-system circuits.
View on Amazon
Universal · Fuse kit
Useful for electrical diagnosis when blown fuses or circuit faults are part of the troubleshooting process.
Useful when body electrical faults trace back to blown fuses or shared circuits.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.