C1979 Ford Code - IWE Solenoid Circuit Failure
Quick Answer
The C1979 Ford diagnostic trouble code refers to an IWE (Integrated Wheel End) solenoid circuit failure. Common causes include Faulty IWE solenoid, Wiring or electrical issues in the solenoid circuit, Corrosion or debris affecting the solenoid operation. 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
- C1979 Ford indicates IWE Solenoid Circuit Failure.
- Common causes
- Common causes include Faulty IWE solenoid, Wiring or electrical issues in the solenoid circuit, Corrosion or debris affecting the solenoid operation.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code C1979 Ford Description
The C1979 Ford diagnostic trouble code refers to an IWE (Integrated Wheel End) solenoid circuit failure. The IWE system is responsible for engaging and disengaging the front wheel hubs in a four-wheel-drive vehicle, allowing for smooth transition between two-wheel drive and four-wheel drive modes. When the solenoid circuit fails, it can lead to issues with the engagement of the front wheels, affecting the vehicle's drivability and performance.
Common Causes of C1979 Ford
- Faulty IWE solenoid
- Wiring or electrical issues in the solenoid circuit
- Corrosion or debris affecting the solenoid operation
- Poor connection or loose wiring in the circuit
- Mechanical failure within the IWE system components
Symptoms of C1979 Ford
- Grinding or clicking noise from the front wheels
- Difficulty shifting between two-wheel drive and four-wheel drive modes
- Reduced traction or engagement of the front wheels in four-wheel drive
- Illumination of the 4WD warning light on the dashboard
- Uneven tire wear due to improper engagement of the front wheels
How to Fix C1979 Ford
- Begin by diagnosing the specific cause of the circuit failure using a diagnostic scanner or multimeter.
- Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as necessary.
- Test the IWE solenoid for proper operation and replace if found to be faulty.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, further diagnosis of the IWE system components may be required.
Cost to Fix C1979 Ford
The cost of repairing an IWE solenoid circuit failure can vary depending on the specific cause of the issue and the labor rates in your area. Generally, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. It is important to factor in additional diagnostic time and any other necessary repairs that may arise during the process. Be sure to consult with a trusted auto repair shop to get an accurate estimate for your vehicle.
Need more information about the C1979 Ford code?
Need more information on how to fix the C1979 Ford code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1979 Ford code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about C1979 Ford Code
1. What does the OBDII code C1979 mean on a Ford vehicle?
The C1979 code indicates an "IWE Solenoid Circuit Failure," meaning there is an issue with the circuit controlling the Integrated Wheel End (IWE) solenoid, which affects the 4WD system.
2. What are the common symptoms of the C1979 code?
Symptoms may include the 4WD system not engaging or disengaging properly, unusual noises from the front wheels, or the 4WD warning light illuminating on the dashboard.
3. What causes the C1979 code in Ford vehicles?
Common causes include a faulty IWE solenoid, damaged wiring or connectors in the solenoid circuit, vacuum leaks in the IWE system, or a failing 4WD module.
4. How can I diagnose the C1979 code?
Start by inspecting the IWE solenoid and its wiring for damage or corrosion. Use a multimeter to test the solenoid and circuit for proper voltage and continuity. Check for vacuum leaks in the IWE system.
5. Can a vacuum leak trigger the C1979 code?
Yes, vacuum leaks in the IWE system can cause the solenoid to malfunction, leading to improper 4WD operation and triggering the C1979 code.
6. How do I fix the C1979 code on my Ford?
Repairs may involve replacing a faulty IWE solenoid, repairing or replacing damaged wiring or connectors, fixing any vacuum leaks, or replacing the 4WD control module if necessary.
7. Is it safe to drive with the C1979 code active?
While the vehicle may still be drivable, the 4WD system may not function correctly, which can impact traction and handling in off-road or slippery conditions.
8. How much does it cost to fix the C1979 code?
The cost depends on the cause. Replacing an IWE solenoid typically costs $100–$200, while fixing wiring or vacuum leaks may vary. Labor costs will add to the total.
9. Can a bad IWE solenoid damage other parts of the vehicle?
Yes, if the IWE solenoid fails, it can cause improper engagement of the front hubs, potentially leading to premature wear on the hubs, axles, or drivetrain components.
10. How can I prevent the C1979 code from occurring?
Regularly inspect and maintain the IWE system, check for vacuum leaks, keep electrical connections clean, and address any 4WD issues promptly to prevent circuit failures.
Discuss the causes and fixes for C1979 Ford OBDII Code
Code C1979 Ford comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.