P1712: High Vehicle Speed in Park
The P1712 code indicates that the Powertrain Control Module (PCM) has detected a vehicle speed signal above the calibrated threshold (typically 0 mph or very close to zero) while the transmission is in Park. This Ford-specific diagnostic checks for logical consistency between the Vehicle Speed Sensor (VSS) signal and the transmission range (TR) sensor position. A mismatch suggests a fault in the speed detection circuit, the TR sensor, or PCM signal processing.
01. Most Common Causes
- Faulty or erratic Vehicle Speed Sensor (VSS)
- Misadjusted or damaged Transmission Range (TR) sensor
- Corroded, shorted, or open wiring/connectors in the VSS circuit
- Internal PCM failure
- Driveline or axle spinning due to inertia with the vehicle lifted (shop condition)
- Mechanical transmission issues allowing movement in Park
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission may not shift properly or may stay in a single gear
03. Step-by-Step Diagnosis
Scan for codes and verify P1712 is present
Inspect VSS and TR sensor wiring/connectors for damage or corrosion
Test VSS signal with a scan tool while rotating the wheels
Check TR sensor adjustment and operation
If all else fails, test PCM for internal faults
1. Frequently Asked Questions
Is it safe to drive?▼
It is generally safe for short trips, but the transmission may not shift correctly, so have it diagnosed soon.
How much does it cost to fix?▼
Typical repair costs range from $100 to $400, depending on the cause (sensor replacement vs. wiring repair).