This code indicates that the engine computer has detected an abnormally high voltage in the circuit responsible for receiving torque management requests. Typically, this means a system like the transmission or traction control is asking the engine to reduce power, but a wiring or sensor issue is causing the signal to be incorrectly amplified or shorted.
A chafed or damaged wire in the torque request signal circuit is shorted to a power source, causing the high voltage reading.
The component generating the torque reduction request, such as an accelerator pedal position sensor, is failing internally and sending an excessively high signal.
Corrosion or spread pins in the wiring harness connectors can cause excessive resistance or signal manipulation, leading to a false high input.
The TCM may internally fail, improperly sending a constant high-voltage torque reduction request to the engine computer.
The PCM may have an internal fault in the signal processing circuit, causing it to misinterpret a normal voltage as high. This is rare.
No, it rarely does. While a failed engine computer is possible, the vast majority of the time this code is caused by wiring shorts, poor connections, or a failed sensor requesting the torque reduction. Replacing the computer first is usually an expensive mistake.
It depends on the symptoms. The vehicle may enter a reduced power mode to protect the drivetrain, which can make driving difficult or unsafe in traffic. It is best to diagnose and repair the issue before regular driving.
Torque management is a system where the engine computer temporarily reduces engine power to protect the transmission during shifts or when traction control intervenes to prevent wheel slip. A high signal means the system thinks it constantly needs maximum power reduction.
It can be, because it involves network communication between multiple control modules. A digital multimeter and a good wiring diagram are essential to trace the signal circuit for shorts or opens.