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 how hard the motor is working. It's like when a video game controller gets stuck and doesn't respond correctly.
The P0A20 code indicates that the motor torque sensor circuit is sending a signal that is too high, suggesting a possible fault in the sensor or its wiring.
The motor torque sensor is responsible for monitoring the torque output of an electric motor. It sends a voltage signal to the vehicle's control module. If the signal is higher than the expected range, the P0A20 code is triggered.
• Reduced engine performance
• Check Engine Light illuminated
• Unusual engine noises
• Faulty motor torque sensor
• Damaged or corroded wiring/connectors
• Faulty control module
OBD-II: On-Board Diagnostics, second generation
Torque: A measure of rotational force
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the motor torque sensor for proper operation.
• Replace the motor torque sensor if faulty.
• Repair or replace damaged wiring/connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $500
Moderate
• Toyota Prius
• Honda Insight
• Chevrolet Volt
• Regular maintenance checks
• Keep electrical connections clean
• Avoid harsh driving conditions
Sensor Issue
• Avoid driving aggressively until repaired.
• Have the vehicle inspected by a professional.
• Monitor for any changes in vehicle performance.
Check with the vehicle manufacturer for warranty coverage on the powertrain components.
This code has been more prevalent in hybrid vehicles due to their reliance on electric motor systems.
Moderate – It's important to address this issue soon to prevent potential damage to the motor.
Driving with this code may not be safe as it can affect vehicle performance. Consult a professional mechanic.
• Vehicle at operating temperature
• Engine running
The motor torque sensor is typically located near the electric motor in hybrid or electric vehicles.
Q: Can I drive with a P0A20 code?
A: It's not recommended to drive for extended periods with this code, as it may affect the vehicle's performance.
Q: How do I reset the P0A20 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, the code should not return.
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