What Does P1706 Mean?
The transmission range sensor or vehicle speed sensor is detecting movement while the gear selector is in Park position. This indicates a mismatch between the expected (zero speed) and actual vehicle speed signal, suggesting a sensor or wiring fault.
Common Causes
35%
Faulty or misadjusted transmission range sensor (park/neutral position switch)
30%
Defective vehicle speed sensor or ABS wheel speed sensor
20%
Damaged wiring or corroded connectors in transmission range sensor circuit
10%
Faulty transmission control module (TCM) or powertrain control module (PCM)
5%
Mechanical shifter linkage problem preventing proper Park engagement
Diagnostic Steps
1
Step 1: With vehicle in Park and engine off, verify gear selector is fully engaged in Park position
2
Step 2: Monitor transmission range sensor signal and vehicle speed sensor data in live data stream while in Park
3
Step 3: Inspect transmission range sensor connector for corrosion, damage, or loose pins
4
Step 4: Test transmission range sensor adjustment and perform sensor output voltage tests in Park position
5
Step 5: Check vehicle speed sensor signal integrity and wiring continuity
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The transmission range sensor or vehicle speed sensor is detecting movement while the gear selector is in Park position. This indicates a mismatch between the expected (zero speed) and actual vehicle speed signal, suggesting a sensor or wiring fault.
The most common cause of P1706 (High Vehicle Speed Observed in Park) is: Faulty or misadjusted transmission range sensor (park/neutral position switch)
Typical repair costs for P1706 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may not start in Park or could allow starting in gear. May cause unintended vehicle movement if Park is not properly engaged.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1706 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission Control System
Difficulty
Type
Manufacturer
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