P2639 Fault Code

Torque Management Feedback Signal A Low

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

Torque Management Feedback Signal A Low indicates a potential issue with the vehicle's torque management system. This system is crucial for optimizing engine performance, especially during acceleration and load changes. When this feedback signal is recorded as low, the vehicle may experience reduced power output or erratic behavior during driving, as the system is unable to effectively manage torque levels.

What are the symptoms of the P2639 code?

Common symptoms associated with a low torque management feedback signal may include:

• Decreased acceleration and power output
• Engine stalling or rough idling
• Unusual noises coming from the drivetrain
• Warning lights on the dashboard indicating engine or transmission issues

What causes the P2639 code?

The low feedback signal can be caused by several factors, including:

• Faulty torque management sensor
• Wiring issues or shorts within the sensor circuit
• Malfunctioning engine control module (ECM)
• Mechanical problems in the drivetrain that affect torque distribution

How to fix P2639?

To address a low torque management feedback signal, consider the following steps:

1. Inspect the torque management sensor and its wiring for damage or wear.
2. Use a diagnostic scanner to check for any additional error codes that may point to related issues.
3. Replace any faulty sensors or repair damaged wiring as needed.
4. If the problem persists, a thorough inspection of the engine control module and transmission system may be necessary.
5. Clear any error codes and test drive the vehicle to ensure the issue is resolved.