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 thinks the temperature sensors for the electric motor's inverter are not working right. It's like when a thermometer gives a wrong reading.
The code indicates a potential issue with the temperature sensors that monitor the inverter of the drive motor 'A'.
The P1B6B code is triggered when the Powertrain Control Module (PCM) detects an abnormal signal from the temperature sensors of the drive motor 'A' inverter. This could be due to a sensor malfunction, wiring issues, or a problem with the inverter itself.
• Check Engine Light is on
• Reduced vehicle performance
• Overheating warning
• Faulty temperature sensor
• Wiring issues or poor connections
• Faulty drive motor inverter
Inverter: A device that converts DC electricity to AC electricity.
PCM: Powertrain Control Module, the vehicle's main computer.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the inverter temperature sensors.
• Test the temperature sensors for proper operation.
• Replace faulty temperature sensor.
• Repair or replace damaged wiring or connectors.
• Replace the drive motor inverter if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regular maintenance checks
• Inspect wiring and connectors periodically
• Ensure cooling systems are functioning properly
Sensor Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for accurate diagnosis and repair.
Repairs may be covered under the vehicle's powertrain warranty. Check with the manufacturer.
This code has been associated with early electric and hybrid vehicles as they rely heavily on inverter systems.
Moderate – It should be addressed soon to avoid potential damage to the inverter.
Driving with this code may lead to reduced vehicle performance and potential safety risks.
• Vehicle at operating temperature
• Under load conditions
The inverter temperature sensors are located near the drive motor inverter, typically in the engine compartment.
Q: Can I drive with a P1B6B code?
A: It's not recommended as it may cause further damage to the inverter system.
Q: How do I reset the P1B6B code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed first.
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