Engine Torque Output Signal

The engine computer expects to see a specific signal about how much torque the engine is producing, but it's not getting the right info, which can affect performance.

The ECM monitors the torque output from various sensors and expects to see a signal in a range that matches the expected engine load and RPM. If the signal is out of range or missing, the code is set.

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.

1. 1Check for any visible wiring issues along the engine torque sensor circuit. Look for damaged, frayed wires or poor connections.
2. 2Using a multimeter, inspect the voltage at the engine torque sensor. Expected voltage should vary from 0.5V at low load to around 4.5V under heavy load. If the voltage is outside of this range, suspect a faulty sensor.
3. 3If the sensor voltage is correct, check the engine control module (ECM) for any underlying issues. Inspect connectors and pins for corrosion or bent pins.
4. 4Clear the fault codes and perform a road test. Monitor the torque signal during various loads and speeds. If the code returns, further diagnosis of the ECM may be needed.

• Faulty engine torque sensor
• Wiring issues or open circuits
• Poor connections or corroded terminals

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