Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that a sensor, which checks how hot a part of the electric motor is, isn't working properly. It's like a thermometer that's broken and can't tell if something is hot or cold.
The code indicates that the temperature sensor for the inverter of Drive Motor 'B' is reading a lower voltage than expected, which suggests a problem with the sensor or its circuit.
The P1E1B code is triggered when the Powertrain Control Module (PCM) detects a low voltage signal from the temperature sensor of the inverter associated with Drive Motor 'B'. This could be due to a faulty sensor, wiring issues, or problems within the inverter itself.
• Check Engine Light is on
• Reduced vehicle performance
• Possible overheating of the inverter
• Faulty inverter temperature sensor
• Wiring issues or poor connections
• Faulty inverter
Inverter: A device that converts DC power to AC power in electric vehicles.
PCM: Powertrain Control Module, the vehicle's main computer that manages engine and transmission functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the temperature sensor.
• Test the sensor for proper operation.
• Replace the faulty temperature sensor.
• Repair or replace damaged wiring or connectors.
• Replace the inverter if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regular maintenance and inspections
• Ensure proper cooling system operation
• Check electrical connections periodically
Sensor Issue
• Have the vehicle inspected by a professional.
• Avoid driving the vehicle if performance is significantly reduced.
Check with the manufacturer for warranty coverage on hybrid or electric components.
This code is more common in hybrid and electric vehicles due to their reliance on inverter systems.
Moderate – It should be addressed soon to prevent potential damage to the inverter.
Driving with this code may lead to reduced vehicle performance and potential safety risks.
• Vehicle must be running
• System must be at operating temperature
The temperature sensor is typically located within or near the inverter housing of Drive Motor 'B'.
Q: Can I drive with a P1E1B code?
A: It's not recommended to drive for long periods with this code, as it may lead to overheating and damage to the inverter.
Q: How do I reset the P1E1B code?
A: After repairs, the code can be cleared using an OBD-II scanner.
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.