C1979 Code - IWE Solenoid Circuit Failure
Quick Answer
The Four Wheel Drive (4WD) Control Module monitors the Integrated Wheel End (IWE) Solenoid. Common causes include Faulty Integrated Wheel End (IWE) Solenoid, Integrated Wheel End (IWE) Solenoid harness is open or shorted, Integrated Wheel End (IWE) Solenoid circuit poor electrical connection. 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 indicates IWE Solenoid Circuit Failure.
- Common causes
- Common causes include Faulty Integrated Wheel End (IWE) Solenoid, Integrated Wheel End (IWE) Solenoid harness is open or shorted, Integrated Wheel End (IWE) Solenoid circuit poor electrical connection.
- 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 C1979 Description
What are the Possible Causes of the DTC C1979?
- Faulty Integrated Wheel End (IWE) Solenoid
- Integrated Wheel End (IWE) Solenoid harness is open or shorted
- Integrated Wheel End (IWE) Solenoid circuit poor electrical connection
How to Fix the DTC C1979?
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 C1979 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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Information for Specific Makes
- C1979 Ford — IWE Solenoid Circuit Failure
- C1979 Lincoln — IWE Solenoid Circuit Failure
- C1979 Mercury — IWE Solenoid Circuit Failure
Frequently Asked Questions about C1979 Code
1. What are the common symptoms of a C1979 IWE Solenoid Circuit Failure OBDII code?
- Common symptoms include difficulty shifting gears, noisy operation from the front end of the vehicle, and noticeable reduction in four-wheel drive performance.
2. What can cause a C1979 IWE Solenoid Circuit Failure code to trigger?
- The code can be triggered by a faulty IWE (Integrated Wheel End) solenoid, damaged wiring in the solenoid circuit, or a malfunction in the four-wheel drive system.
3. How serious is a C1979 OBDII code related to IWE Solenoid Circuit Failure?
- Ignoring the code can lead to reduced four-wheel drive functionality and potential damage to other components in the system. It is recommended to address the issue promptly.
4. Are there any DIY repair tips for fixing a C1979 IWE Solenoid Circuit Failure?
- DIY repair tips may include checking the wiring harness for any visible damage, ensuring proper connections to the solenoid, and testing the solenoid itself for proper functionality.
5. Can a C1979 OBDII code be temporarily reset to see if the issue resolves on its own?
- While resetting the code may temporarily clear the warning light, it is not a permanent solution. It is important to diagnose and address the root cause of the issue.
6. How can a mechanic diagnose a C1979 IWE Solenoid Circuit Failure error code?
- A mechanic can use an OBDII scanner to read the code, inspect the IWE solenoid and wiring for physical damage, and perform electrical tests to pinpoint the exact cause of the failure.
7. Is it safe to drive with a C1979 OBDII code related to IWE Solenoid Circuit Failure?
- It is generally safe to drive with this code, but it is recommended to avoid engaging four-wheel drive until the issue is resolved to prevent further damage.
8. How much does it typically cost to repair a C1979 IWE Solenoid Circuit Failure issue?
- The cost of repair can vary depending on the underlying cause, but it may range from $150 to $400, including parts and labor.
9. Can extreme weather conditions impact the likelihood of a C1979 OBDII code appearing?
- Yes, extreme cold or wet conditions can exacerbate issues with the IWE solenoid circuit, potentially leading to the triggering of the C1979 code.
10. Are there any preventive measures to avoid encountering a C1979 IWE Solenoid Circuit Failure in the future?
- Regular inspection and maintenance of the four-wheel drive system, including checking the IWE solenoid and wiring, can help prevent the recurrence of the C1979 code.
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