Engine Torque Demand - Active Level Too Low
Indicates that the engine is not receiving the expected torque demand signal.
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) expects a specific amount of torque input based on driver demands; if it's too low, it can trigger this code.
What the computer is actually seeing
The ECU expects a torque demand value to pulse between 50% to 100% during acceleration. If the signal stays below 50% for more than 2 seconds, it triggers SPN 2304.
What a healthy reading looks like
A torque demand signal voltage should ideally be around 0.2 to 4.5 volts depending on 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.
- 11. Inspect accelerator pedal position sensor wiring and connectors for damage or corrosion. If faulty, repair or replace.
- 22. Check the voltage output from the accelerator pedal position sensor. It should range between 0.2V (idle) and 4.5V (full throttle). If out of range, replace the sensor.
- 33. Test the ECU for proper functioning with appropriate diagnostic tools. If ECU fails diagnostics, consider replacement.
Common causes
- Faulty accelerator pedal position sensor
- Wiring issues in the throttle control circuit
- Faulty engine control unit (ECU)
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive the vehicle with this code?
It's advisable to fix this code soon, as it can affect performance and drivability.
Will this code return after I clear it?
If the underlying issue isn't resolved, the code is likely to return.
Why does this code pair with SPN 2303 or SPN 2305?
These codes generally relate to similar electrical or sensor issues that affect engine torque management.
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