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 a sensor that checks how hot a part of the car's electric motor system is, is reporting a temperature that's too high.
The vehicle's computer has detected that the temperature sensor for the drive motor 'B' inverter is reading a voltage that is higher than expected, indicating a possible issue with the sensor or the wiring.
The P1E20 code is triggered when the Powertrain Control Module (PCM) or the Battery Energy Control Module (BECM) detects a high voltage reading from the Drive Motor 'B' Inverter Temperature Sensor 'B'. This could be due to a malfunctioning sensor, wiring issues, or a fault in the inverter itself.
• Check engine light is on
• Reduced vehicle performance
• Possible overheating of the drive motor
• Faulty Drive Motor 'B' Inverter Temperature Sensor
• Wiring issues such as shorts or open circuits
• Faulty inverter
Inverter: A device that converts direct current (DC) to alternating current (AC).
PCM: Powertrain Control Module, the vehicle's main computer that controls engine and transmission functions.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connections to the temperature sensor
• Test the temperature sensor for proper operation
• Replace the faulty temperature sensor
• Repair or replace damaged wiring
• Replace the inverter if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regular maintenance checks
• Ensure proper cooling system function
• Inspect wiring regularly
Sensor Issue
• Avoid driving the vehicle until the issue is diagnosed
• Consult with a professional mechanic for an accurate diagnosis
Check with the vehicle manufacturer for warranty coverage on hybrid or electric components.
This code is more common in hybrid and electric vehicles due to the complexity of their electrical systems.
High – This issue can lead to overheating and potential damage to the drive motor if not addressed promptly.
Driving with this code active may lead to reduced vehicle performance and potential safety risks.
• Vehicle at operating temperature
• All electrical systems active
The Drive Motor 'B' Inverter Temperature Sensor is typically located near the inverter assembly in the engine compartment.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to overheating and damage to the drive motor, resulting in costly repairs.
Q: Can I drive my car with this code?
A: It is not recommended to drive the vehicle until the issue is diagnosed and repaired, as it may cause further damage.
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