The P1705 trouble code indicates a malfunction in the Ford transmission system, specifically the Transfer Case Differential Lock Solenoid Circuit. This typically appears in vehicles equipped with four-wheel drive and can cause performance issues if unresolved. Below, we outline the symptoms, potential causes, and estimated repair costs for Ford models.
Symptoms of P1705 Code
When the P1705 code triggers in your Ford vehicle, you may experience several noticeable symptoms. These include:
- Illumination of the four-wheel drive or check engine warning light on the dashboard.
- Unusual noises, such as grinding or clunking, during acceleration or gear shifts.
- Difficulty shifting between drive modes, particularly engaging or disengaging four-wheel drive.
- Erratic vehicle behavior in low-traction situations, like reduced traction or uneven power distribution.
Common Causes
Several underlying issues can lead to the P1705 code. Primary causes involve electrical or mechanical failures in the transfer case system:
- Damaged or corroded wiring in the solenoid circuit, affecting signal transmission.
- A faulty transfer case differential lock solenoid, preventing proper engagement of the four-wheel drive.
- Issues with the transmission control module (TCM) or powertrain control module (PCM), such as internal faults or programming errors.
- Solenoid valve blockages due to debris or wear, impeding fluid flow.
Repair Costs
Repair costs vary based on vehicle model, labor rates, and component replacements. Average estimates include:
- Solenoid replacement: $100-$400 for parts and labor, involving simple access and connection checks.
- Wiring repairs: $50-$200, depending on damage extent and diagnostics time.
- Control module issues: $300-$800 or more for TCM/PCM reprogramming or replacement, requiring advanced diagnostics.
- Total costs range from $150-$1000, factoring in shop fees and additional fixes like fluid flushes. Professional diagnosis is crucial to avoid unnecessary expenses.