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 has detected a problem with the sensor that measures the electric current in one part of the car's motor. It's like a thermometer telling you the temperature is too low, but for electricity.
The P2E21 code indicates that the current sensor for Phase Y of Drive Motor A is reading lower than expected values.
The Drive Motor A Phase Y Current Sensor monitors the electric current flowing through the motor's Phase Y. If the sensor detects a current lower than the specified threshold, it triggers the P2E21 code. This can affect the motor's performance and efficiency.
• Reduced vehicle performance
• Warning light on the dashboard
• Possible stalling or hesitation
• Faulty current sensor
• Wiring issues such as open or short circuits
• Malfunctioning motor controller
Current Sensor: A device that measures the flow of electric current.
Phase Y: One of the phases in a three-phase motor system.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the current sensor for proper operation.
• Replace the faulty current sensor.
• Repair or replace damaged wiring.
• Replace the motor controller if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $500
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regular maintenance checks
• Keep electrical connections clean and secure
• Avoid overloading the vehicle's electrical system
Sensor Issue
• Do not ignore the warning light; get it checked promptly.
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
Check your vehicle's warranty for coverage on electrical components.
This code is relatively uncommon and typically occurs in electric or hybrid vehicles.
Moderate – Should be addressed soon to prevent potential damage to the motor.
Driving with this code may lead to reduced performance and should be addressed to ensure safety.
• Vehicle in 'ON' position
• Motor running
The current sensor is typically located near the drive motor, within the motor assembly or control unit.
Q: Can I drive with the P2E21 code?
A: It's not recommended to drive with this code as it can affect vehicle performance and lead to further damage.
Q: How can I reset the P2E21 code?
A: You can reset the code with an OBD-II scanner, but it's important to fix the underlying issue first.
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