P0A20 Fault Code

Motor Torque Sensor Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0A20 fault code indicates an issue with the Motor Torque Sensor Circuit, which can lead to abnormal readings in the electric motor's torque output. This circuit is crucial for the management of engine power and efficiency, as it helps the vehicle's control module make necessary adjustments based on the torque demands of the system.

What are the symptoms of the P0A20 code?

Drivers may notice the following symptoms when the P0A20 fault code is present:

• Reduced vehicle power or acceleration
• Warning lights illuminated on the dashboard, including the Check Engine Light
• Erratic engine performance or a noticeable drop in fuel efficiency
• The vehicle may enter limp mode, limiting speed and power to protect the engine.

What causes the P0A20 code?

Several factors can contribute to the P0A20 fault code:

• Malfunctioning motor torque sensor
• Poor electrical connections or damaged wiring in the sensor circuit
• Faulty control module (ECM/PCM)
• Corrosion or short circuits in the sensor connectors
• Environmental factors such as moisture or extreme temperatures affecting sensor performance.

How to fix P0A20?

To resolve the P0A20 fault code, consider the following steps:

1. Inspect the motor torque sensor and its wiring for damage or corrosion.
2. Check for loose or poor electrical connections within the sensor circuit.
3. Test the motor torque sensor with a multimeter to ensure it is functioning correctly.
4. Replace the motor torque sensor if it is faulty.
5. Clear the fault codes from the vehicle's computer and take the vehicle for a test drive to ensure the issue is resolved.