C100B — – Engine Torque Request Not Adjustable (MG HS)

The C100B trouble code indicates that the Engine Control Module (ECM) is unable to adjust the engine torque request as expected. This signal is essential for proper coordination between the engine and other systems like traction control and transmission. When this code appears, it usually points to a communication fault or control logic issue.

Causes of C100B Code

• Faulty or unresponsive Engine Control Module (ECM)
• Communication error between ECM and Transmission Control Module (TCM)
• Software glitch or corrupted calibration data

Symptoms of C100B Code

• Reduced engine performance or torque limitation
• Traction control or stability system warning lights
• Hesitation during acceleration or gear shifting