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P2544 — Torque Management Request Input Signal

Manufacturer-specificPowertrain (engine & transmission)

P2544 signals that the powertrain control module received an invalid torque management request input signal, which is used to regulate engine torque. The code is stored when the signal is out of the expected range or missing.

Symptoms

What causes it — most likely first

1. Failed torque management request sensor or switch

The sensor that supplies the torque request signal to the PCM may be defective, providing out‑of‑range voltage or resistance.

2. Corroded or loose wiring/connector

Excessive corrosion, broken pins, or a loose connector in the signal circuit can interrupt the torque request input.

3. PCM software or calibration issue

A corrupted PCM firmware or incorrect calibration can misinterpret a valid signal as invalid.

4. Failed PCM

A complete PCM failure is uncommon; it typically occurs only after multiple related component failures.

5. Environmental interference

Electromagnetic noise or voltage spikes from other systems can corrupt the torque request signal.

How it's diagnosed

  1. Verify the P2544 code and check for any additional stored codes.
  2. Inspect the torque management request sensor, its wiring, and connectors for damage or corrosion.
  3. Measure the sensor's signal voltage and resistance against manufacturer specifications.
  4. Clear the code and perform a road test to see if it returns.
  5. If the signal is within spec, check PCM software version and apply any relevant updates.

Code facts & related codes

SystemPowertrain (engine & transmission)
StandardizationManufacturer-specific (P1/B1/C1/U1)
Related codesP2540 — Low Pressure Fuel System Sensor CircuiP2541 — Low Pressure Fuel System Sensor CircuiP2542 — Low Pressure Fuel System Sensor CircuiP2543 — Low Pressure Fuel System Sensor CircuiP2545 — Torque Management Request Input SignalP2546 — Torque Management Request Input Signal

Frequently asked

Do I need to replace the PCM when P2544 appears?

Replacing the PCM is rarely necessary; the issue is usually a faulty sensor, wiring problem, or calibration error that can be resolved by addressing those components first.

Can I continue driving with a P2544 code?

Driving is possible but may involve reduced power, rough operation, or limp‑mode behavior; it is advisable to diagnose and repair the issue promptly to avoid further drivability problems.

Is the torque management request sensor a common wear item?

The sensor can degrade over time due to heat and vibration, making it a relatively common failure point compared to other emissions‑related components.