P2642 Fault Code

Torque Management Feedback Signal B Range/Performance

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

The P2642 fault code indicates a problem related to the Torque Management Feedback Signal B, implying that there is a performance issue or range problem detected by the vehicle's engine control module (ECM). This signal is essential for optimizing engine performance and ensuring that power delivery is appropriately managed under various driving conditions.

What are the symptoms of the P2642 code?

Symptoms associated with the P2642 code may include decreased engine performance, poor fuel economy, unusual engine behavior during acceleration, or the check engine light illuminating on the dashboard. Drivers might notice that the vehicle feels sluggish or unresponsive in certain situations.

What causes the P2642 code?

Common causes for the P2642 code include malfunctioning sensors, issues with wiring or connectors, problems with the engine control module itself, or faults within the torque management system. Additionally, low engine oil levels or dirty oil can cause fluctuations in the feedback signal, leading to this fault code.

How to fix P2642?

To resolve the P2642 fault code, technicians typically start by checking the engine oil level and quality, ensuring it is within specifications and clean. Next, they inspect the wiring and connectors associated with the torque management system for any damage or corrosion. If necessary, they may replace faulty sensors, and in some cases, a software update for the ECM could also be required. Clear the code after making the repairs to see if it returns.