C1685 Infiniti Code - 4WAS Main Control Unit Communication
Quick Answer
The 4 Wheel Active Steer (4WAS) front control unit and 4WAS main control unit transmit/receive information to/from each other for optimum control of the 4WAS system with the specified 4WAS system line (4WAS communication line) between 4WAS Front Control Unit and 4WAS Main Control Unit. Common causes include Faulty 4 Wheel Active Steer (4WAS) Main Control Unit, Faulty 4 Wheel Active Steer (4WAS) Front Control Unit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1685 Infiniti indicates 4WAS Main Control Unit Communication.
- Common causes
- Common causes include Faulty 4 Wheel Active Steer (4WAS) Main Control Unit, Faulty 4 Wheel Active Steer (4WAS) Front Control Unit.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1685 Infiniti Description
What are the Possible Causes of the DTC C1685 Infiniti?
- Faulty 4 Wheel Active Steer (4WAS) Main Control Unit
- Faulty 4 Wheel Active Steer (4WAS) Front Control Unit
How to Fix the DTC C1685 Infiniti?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1685 Infiniti code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about C1685 Infiniti Code
1. What does the OBDII code C1685 mean on an Infiniti?
C1685 indicates a communication issue with the 4WAS (Four-Wheel Active Steer) Main Control Unit in the vehicle.
2. What are the common symptoms of code C1685 in an Infiniti?
Symptoms may include the 4WAS warning light on the dashboard, reduced steering responsiveness, or a loss of four-wheel steering functionality.
3. What causes the C1685 code to appear?
The code is typically caused by faulty wiring, a damaged 4WAS Main Control Unit, a malfunctioning steering angle sensor, or poor electrical connections.
4. Can I drive my Infiniti with a C1685 code?
While the vehicle may still be drivable, the four-wheel steering system may not function properly, which could affect handling and safety.
5. How do I diagnose a C1685 code?
Start by inspecting the wiring and connectors for damage or corrosion. Use a diagnostic scan tool to check for related codes and verify communication with the 4WAS Main Control Unit.
6. How can I fix the C1685 code on my Infiniti?
Repairs may involve replacing damaged wiring, repairing or replacing the 4WAS Main Control Unit, or addressing issues with related sensors or connectors.
7. Does clearing the C1685 code fix the problem?
Clearing the code may temporarily turn off the warning light, but the underlying issue must be repaired to prevent it from returning.
8. Is the C1685 code specific to Infiniti vehicles?
Yes, the C1685 code is specific to Infiniti vehicles equipped with the 4WAS system.
9. How much does it cost to repair a C1685 code?
Repair costs can vary depending on the exact issue but may range from $100 for minor wiring repairs to several hundred dollars if the 4WAS Main Control Unit needs replacement.
10. Can a failing battery cause the C1685 code?
Yes, low voltage from a failing battery can cause communication errors between the 4WAS system components, triggering the code.
Discuss the causes and fixes for C1685 Infiniti OBDII Code
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