P2643

Torque Management Feedback Signal B Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Reduced engine power
Check Engine Light Illuminates
The car goes into emergency mode
Deterioration in acceleration dynamics
Increased fuel consumption

Causes

Open or short circuit in the sensor circuit
Torque sensor malfunction
Problems with the engine control module
Poor contact in connectors
Corroded or damaged wiring

How to Fix

Check the integrity of the wiring in the sensor circuit
Check connections and connectors for corrosion
Test the torque sensor
Check power and ground in the circuit
If necessary, replace the sensor or control module

Related codes

P2641 P2642 P2644