The C1702 error code is a trouble code found in Hyundai vehicles. It shows a variant coding error, a common issue. This error can affect the vehicle’s systems, like the Lane Departure Warning System (LDWS).
It’s a big problem for cars made between May 2, 2013, and October 21, 2013. This includes the 14MY Equus (VI FL) 5.0L. We’ll look at why it happens and how to fix it. This guide will help you understand and solve the C1702 error code.
C1702 Error Code Breakdown
The C1702 error code is a coding error that affects the vehicle’s systems, like the Lane Departure Warning System (LDWS). It’s often linked to a CAN timeout, which can cause the malfunction indicator lamp (MIL) to light up.
To understand the C1702 error code, we need to look at its technical details, symptoms, and related systems. This error is a coding issue that needs calibration for the radar sensor. Symptoms include the MIL lighting up and problems with the LDWS system.
Technical Details
The C1702 error code is linked to the LDWS system. This system warns the driver if the car drifts out of its lane. It uses a camera and radar sensor to monitor the car’s position and alert the driver.
A coding error can mess up the system’s calibration. This leads to a CAN timeout and the MIL lighting up.
Common Symptoms and Associated Systems
The C1702 error code is often seen with these symptoms and systems:
- MIL illumination
- LDWS system malfunction
- CAN timeout
- Radar sensor calibration issues
Knowing the technical details, symptoms, and related systems is key to fixing the C1702 error code. By fixing the coding error and calibrating the radar sensor, drivers can solve the problem. This ensures the LDWS system works right.
Tools Required for C1702 Diagnosis
To find the cause of the C1702 error code, you need specific tools. A Hyundai scan tool is key. It lets technicians read the trouble code and do more tests to find the problem.
Choosing the right tools is vital for a correct diagnosis and fixing the issue. Here are some important tools for diagnosing C1702:
- Hyundai scan tool for reading trouble codes and performing diagnostics
- Communication line testing equipment to check for issues with the CAN bus system
- Load testing equipment to verify power and ground connections to modules
With these tools, technicians can quickly find and fix the C1702 error code. The Hyundai scan tool is very helpful. It gives detailed info about the vehicle’s systems and helps with advanced diagnostics and repairs.
Common Triggers of C1702 in Hyundai Vehicles
When you see the C1702 error code in your Hyundai, it’s key to know why it happens. This code often pops up due to sensor problems, wiring issues, or control module faults. Knowing these causes helps you find and fix the main problem.
Some common codes linked to C1702 include P0441, P0401, and P0455. These point to issues with the evaporative emission control, exhaust gas recirculation, and fuel systems. Problems with oxygen or crankshaft position sensors can also lead to this error.
Causes of C1702 Error Code
- Sensor malfunctions: Incorrect data sent to the control module can trigger the C1702 error code.
- Wiring issues: Communication problems between sensors and the control module can cause the error code.
- Control module problems: Issues with the control module can prevent proper communication with sensors, leading to the C1702 error code.
Other factors like fuel leaks, air-fuel mixture issues, and ignition failures can also cause C1702. By understanding these common causes, you can start diagnosing and fixing the problem.
| Diagnostic Code | Description |
|---|---|
| P0441 | Poor purge of the system for trapping fuel vapor |
| P0401 | Low efficiency in the exhaust gas recirculation system |
| P0455 | Leak in the vapor recovery system |
Diagnostic Steps for C1702 Hyundai
To fix the C1702 error code, a step-by-step approach is key. First, use a scan tool to read the trouble code. This tells you which system is affected. It helps guide the next steps in fixing the problem.
Next, do a visual check of the wiring and sensors. Look for damage or malfunctions. This might mean checking wires for breaks or corrosion, or sensors for physical damage. These steps help find the problem fast and fix it right.
Some common steps for fixing C1702 include:
- Using a scan tool to read the trouble code and identify the affected system
- Performing a visual inspection of the wiring and sensors to check for damage or malfunction
- Checking the vehicle’s electrical circuits, connectors, and wiring for damages such as breaks, corrosion, or frayed legs
By following these steps and using the right tools, technicians can quickly find and fix the C1702 error. This gets the vehicle running safely and efficiently again.
Complete Repair Process
The repair for the C1702 error code involves several steps. These include safety preparations, accessing components, and the repair itself. It’s important to follow the manufacturer’s guidelines and take safety precautions. The first step is to disconnect the battery and wear protective gear.
After safety is ensured, the next step is to access the affected parts. This means getting to the sensors and control module. It’s a careful process to avoid damage to other parts. You might need to remove trim panels and disconnect electrical connectors.
Key Repair Procedures
The repair for the C1702 error code may include replacing sensors and updating software. It’s key to follow the manufacturer’s instructions for the vehicle’s systems to work right. Some common steps include:
- Replacing the transmission solenoid and sensor
- Updating the transmission control module software
- Checking and adjusting ATF levels
- Replacing the e-module
Following the repair process, technicians can fix the issue and prevent future problems. The steps may vary by vehicle, so always check the manufacturer’s guidelines.
| TSB Date | Problem Area | NHTSA ID | TSB ID |
|---|---|---|---|
| 08/10/17 | Transmission and Drivetrain | 10110919 | 5NP-H3D9Z-03 |
| 01/26/17 | Transmission and Drivetrain | 10089604 | 5NP-W7J6Y-11 |
Repair Costs and Parts
Understanding the costs to fix the C1702 error code is key. The cost can vary a lot, based on the problem’s extent and the technician’s labor. Costs can range from a few hundred to several thousand dollars. This depends on the problem’s complexity and the professional service expenses.
DIY cost analysis is crucial. It considers the cost of parts and tools. This helps owners decide if they should fix it themselves or hire a pro. Common costs include:
- Replacement parts, such as sensors and wiring
- Labor costs, which can vary based on the technician’s experience and location
- Diagnostic tools and equipment, needed to diagnose and fix the issue
Think about the long-term costs and benefits of each option. DIY might save money short-term but may not be as reliable as a pro’s work. Professional services might cost more upfront but offer peace of mind and protect against future costs.
| Repair Option | Cost Range | Benefits |
|---|---|---|
| DIY Repair | $500-$2,000 | Potential cost savings, ability to perform repair at home |
| Professional Repair | $1,000-$5,000 | High-quality workmanship, warranty protection, convenience |
By considering these factors, owners can make smart choices about C1702 error code repairs. This ensures their vehicle is safe and runs well.
Prevention Methods
Regular maintenance is key to avoid the C1702 error code in Hyundai vehicles. By sticking to prevention methods and maintenance tips, owners can lower the chance of this error. This ensures their car runs well.
Important prevention steps include checking wiring and sensors for damage or wear. Also, keep the software updated and make sure the vehicle is calibrated right. It’s vital to follow OEM repair and calibration steps. This keeps the vehicle systems working right and safe.
Here are some maintenance tips to avoid the C1702 error code:
- Regularly check and maintain the vehicle’s battery and electrical system
- Ensure the vehicle’s software is up-to-date
- Check the vehicle’s sensors and wiring for signs of damage or wear
- Follow OEM procedures for repairs and calibration
Using these prevention methods and maintenance tips, owners can stop the C1702 error code. This ensures their vehicle runs smoothly and safely.
| Prevention Method | Description |
|---|---|
| Regular Maintenance | Regularly check and maintain the vehicle’s battery and electrical system |
| Software Updates | Ensure the vehicle’s software is up-to-date |
| Sensor and Wiring Checks | Check the vehicle’s sensors and wiring for signs of damage or wear |
| OEM Procedures | Follow OEM procedures for repairs and calibration |
Model-Specific Variations
When facing the C1702 error code, it’s key to look at model-specific variations. Different Hyundai models have unique systems and parts. Sedans and SUVs need different diagnostic methods. Knowing these differences is vital for fixing the problem right.
Sedans and SUVs have different wiring and sensors. For example, a Hyundai sedan’s wiring might not match an SUV’s. SUVs, with their four-wheel-drive systems, need special diagnostic steps.
Important factors include:
- Variant coding issues, which can affect the diagnosis and repair process
- Communication line patterns, which may vary across different models and systems
- Power and ground confirmations, which are essential for ensuring proper system function
Considering these variations, technicians can better diagnose and fix the C1702 error code. This method helps find the real problem and fix it, avoiding repeat repairs and improving the car’s performance.
| Model Type | Diagnostic Approach | Repair Considerations |
|---|---|---|
| Sedan | Wiring diagram analysis, sensor configuration check | Component replacement, software updates |
| SUV | Four-wheel-drive system diagnosis, unique component check | Specialized repair procedures, system calibration |
Conclusion
The C1702 error code in Hyundai vehicles is a challenge that can be overcome. With the right knowledge and approach, owners can diagnose and repair it successfully. This article provides a roadmap to resolving this issue.
It’s important to address the C1702 error code quickly to avoid further damage. Regular maintenance, like coolant flushes and component checks, can help prevent it. If you see the C1702 error, get help from a trusted Hyundai service provider.
Now, you have the tools to tackle the C1702 error code and keep your Hyundai running well. Stay alert, prioritize safety, and seek expert help when needed. Together, we can help Hyundai owners solve this problem and keep their vehicles in top shape.
