C1731 on 2003-2017 Lincoln Navigator (Base, Ultimate, L, L Ultimate, Select, Reserve) — Front Gate (Cut) Valve Solenoid Circuit
1 vehicles · 1 makes · $700-$2,400 repair
Most Reported On
C1731 is an OBD-II diagnostic trouble code meaning “Front Gate (Cut) Valve Solenoid Circuit.” C1731 is a manufacturer-specific chassis code (documented on Toyota) indicating a fault in the front gate/cut valve solenoid circuit within the ABS/stability control hydraulic actuator. This solenoid valve helps the system isolate and regulate brake-line pressure for anti-lock braking and stability control. When the module detects an electrical fault in that solenoid circuit, it disables ABS/stability functions and sets the code; normal braking remains but assisted features are lost. Confirm against the factory manual as definitions vary by maker. This code is most commonly reported on 2003-2017 Lincoln Navigator (Base, Ultimate, L, L Ultimate, Select, Reserve), with repair costs ranging from $700 to $2,400.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
C1731 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does C1731 mean?
C1731 stands for "Front Gate (Cut) Valve Solenoid Circuit." C1731 is a manufacturer-specific chassis code (documented on Toyota) indicating a fault in the front gate/cut valve solenoid circuit within the ABS/stability control hydraulic actuator. This solenoid valve helps the system isolate and regulate brake-line pressure for anti-lock braking and stability control. When the module detects an electrical fault in that solenoid circuit, it disables ABS/stability functions and sets the code; normal braking remains but assisted features are lost. Confirm against the factory manual as definitions vary by maker.
What are the most common causes of C1731?
The most common causes of C1731 are: Faulty gate/cut valve solenoid in the ABS actuator, Open or short in the solenoid control circuit, Damaged wiring or connector at the hydraulic unit, Low system voltage or poor ground, Internal ABS/stability control actuator fault, Corrosion or water intrusion at the connector. The specific cause varies by vehicle.
How much does it cost to fix C1731?
Repair costs for C1731 range from $700 to $2,400, depending on the vehicle and root cause.
Which vehicles are affected by C1731?
Au7o has documented C1731 across 1 vehicle models from 1 manufacturers: Lincoln.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.