Engine Torque Request Signal From Other Sources
This code indicates an issue with the engine torque request signal from a source other than the accelerator pedal or transmission.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The engine control unit (ECU) is expecting a torque request signal to properly manage engine performance, but it's getting a signal that it either doesn’t understand or isn’t valid.
What the computer is actually seeing
The ECU monitors the torque request signals from various systems. If the signal deviates from expected patterns or is missing, it triggers this fault code.
What a healthy reading looks like
Normal torque request signals should range from 0 to the maximum rated torque of the engine, which can vary by application but generally should correspond with the accelerator pedal position and load.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the vehicle's wiring and connectors related to the torque request circuit for damage or corrosion.
- 2Verify the throttle position sensor (TPS) as it directly influences torque requests. Check for proper voltage (typically 0.5 to 4.5 volts) and smooth operation.
- 3Inspect the engine control module (ECM) for any software updates or faults, and check for stored freeze frame data related to the fault code.
- 4Monitor live data for the torque request signals when the accelerator is pressed. Ensure the signals correspond with expected values.
Common causes
- Faulty engine control module (ECM) software
- Bad wiring or connections in the torque request circuit
- Issues with the throttle position sensor (TPS)
- Problems with the vehicle's transmission or chassis control modules
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Drivability might be affected; it's best to diagnose and resolve the issue soon.
Will this code come back after I fix it?
If the root cause is fully addressed, it should not return. Clear the code after repairs and monitor.
Why does this code pair with SPN 3719?
SPN 3719 relates to the throttle position, which is directly tied to engine torque requests; issues in one can affect the other.
Working a real vehicle right now?
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