Transmission Torque Reduction Signal Malfunction (Ford)
What does P1712 mean?
The P1712 code means the vehicle's onboard diagnostic system has detected: Transmission Torque Reduction Signal Malfunction (Ford). This is a moderate severity code.
Common Symptoms
- Check Engine Light on
- Harsh upshifts
- Transmission shudder during shifts
- Engine flare between shifts
- Reduced shift quality
Probable Causes (Ranked by Likelihood)
- PCM torque management software fault Very High
- Faulty throttle position sensor signal High
- Communication error between PCM and TCM Moderate
- Damaged wiring in torque signal circuit Low
Step-by-Step Diagnostic Procedure
-
Monitor engine torque reduction request on a scan tool during upshifts. The PCM should briefly reduce torque.
-
Check throttle position sensor signal for smooth, consistent readings during acceleration.
-
Verify communication between PCM and transmission module is functioning properly.
-
Check for PCM software updates or TSBs from Ford related to shift quality improvements.
-
Inspect wiring between the PCM and transmission control module for damage or corrosion.
Frequently Asked Questions
What is torque reduction during shifts?
The PCM briefly reduces engine torque during upshifts to smooth the transition between gears. Without this reduction, shifts feel harsh and can damage transmission components.
Can a PCM update fix this?
Often yes. Ford has released several calibration updates that improve torque management during shifts. Check with a Ford dealer for available updates for your vehicle.
Does this affect the PowerShift transmission?
The Ford PowerShift (DPS6) dual-clutch transmission in the Focus and Fiesta is known for shift quality issues. This code can be related but is separate from the clutch shudder recall.