P2644

Symptoms

• Check Engine light comes on
• Engine power limitation
• The car goes into emergency mode
• Unstable operation at certain speeds
• Gear shifting problems (for automatic transmissions)

Causes

• Open or short circuit in the sensor circuit
• Torque sensor malfunction
• Problems with the engine control module (ECU)
• Corrosion or poor contact in connectors
• Mechanical transmission problems affecting sensor readings

How to Fix

1. Check the integrity of the wiring and connectors in the sensor circuit
2. Test the torque sensor with a multimeter
3. Check the sensor readings using a diagnostic scanner
4. If necessary, replace the torque sensor
5. Reflash or replace the ECU if a malfunction is detected

Related codes

Error P2644 by Vehicle Brand