Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Code P1571, Traction Control Desired Torque Out Of Range: Notes
Traction control system uses anti-lock brake system in conjunction with PCM fuel and ignition controls to limit drive wheel slippage during acceleration. PCM controlled portion of traction control system reduces engine torque by any or all of following methods.
- Retarding spark advance.
- Altering air/fuel ratio.
- Altering boost duty cycle (VIN 1 only).
- Shutting off up to 3 injectors.
To determine amount of torque reduction required, PCM monitors desired torque PWM signal circuit from Electronic Brake and Traction Control Module (EBTCM). PCM also provides a delivered torque PWM signal, informing EBTCM how much torque is being produced by engine. Code P1571 will set when the following condition is present.
- If desired torque signal PWM duty cycle is less than 5 percent or greater than 95 percent. Code P1571 will set indicating a problem with desired torque input on circuit.
When Code P1571 is set, PCM will command EBTCM via serial data circuit to set ABS/TCS DTC 75, turn off traction control, and illuminate TRACTION OFF indicator. P1571 does not illuminate the Malfunction Indicator Light (MIL).
- Checks circuit for an open or short to ground.
- Ensures EBTCM is proving a proper PWM signal to PCM.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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