Reading and Clearing DTCs/Fault codes of Czech car brand – SKODA

Skoda, the Czech automaker renowned for its reliable and practical vehicles, also utilizes Diagnostic Trouble Codes (DTCs) to help diagnose and repair issues. These alphanumeric codes, displayed on the dashboard or accessed through an OBD-II scanner, are a universal language for technicians to understand your Skoda’s health and performance. If you see a Check Engine Light (CEL), that could mean your transmission oil temp or any other warning lights like SRS, ABS, Traction control, orDifferential.

DTCs or Fault codes are like secret messages your Skoda conveys when something’s amiss. These alphanumeric codes are like humans’ Morse code. They provide clues to underlying issues, helping mechanics or DIY enthusiasts to diagnose and repair problems efficiently. Understanding DTCs empowers you, the Skoda owner, to stay informed about your vehicle’s health and make informed decisions during its maintenance.

How do you access the fault codes? What is OBD?

1. Gather the necessary tools: Equip yourself with a Professional-Grade OBD-II Scanner that is compatible with your Skoda. Click Here for our Professional-Grade YOUCANIC Scanner
2. Access the OBD-II Port: This port is usually found near the steering column under the dashboard. The OBD-II port is the gateway to your car’s diagnostic information. Turn the ignition key to the “ON” position without starting the engine to make a connection with the vehicle’s computer. If your Skoda has a START/STOP feature, press the button without pressing the brake pedal. Do not start the engine. If you are unsure of the OBD-II port of your vehicle, you can always check the Car Owner’s Manual. If you plugged it in but your scanner can’t detect it, check our article here.
3. Access the Diagnostic Menu: On the YOUCANIC scanner’s display, navigate to the “Diagnostic” or “Scan” menu. This menu allows you to access various diagnostic functions for your Skoda.
4. Select ‘Chrysler’ as the Vehicle Make: This ensures the scanner effectively communicates with the Chrysler On-Board Diagnostic system and effectively scans the fault codes.
5. Select option for model selection: The scanner has various options for model selection. You can choose SmartVIN to detect your vehicle automatically. However, you can choose Manual Selection if SmartVIN does not work as intended. Check out our article here to learn more about your Skoda’s VIN.
6. Select the Specific Model and Chassis: After selecting the vehicle make, scroll through the available models and select the correct one for your Skoda. Additionally, choose the corresponding chassis or body type to properly sync the scanner to your vehicle.
7. Select Control Units: Once you have selected the model and chassis, the scanner will let you choose between “Quick scan” or “Control Modules.” Control Modules display a list of control units or modules in your vehicle. Examples include the engine control module (ECM), transmission control module (TCM), and ABS control module. Choose the specific module you want to diagnose. Otherwise, you can also choose   “Quick Scan” to check everything.
8. Interpret the Codes: Once the YOUCANIC scanner completes the code retrieval process, the displayed codes will provide information about specific issues detected by the control unit. Take note of these codes for further analysis and diagnosis. Each DTC consists of a letter and four numbers. The letter indicates the system affected, while the numbers describe the issue more specifically. Click here to learn more about fault codes.
9. Erase Codes: After the problem has been repaired, return to the scanner’s menu and select the option to “Erase Codes” or “Clear Codes.” This action removes the stored fault codes from the control unit’s memory, indicating that the problem has been resolved. Please note that you may or may not erase a code when the issue is not fixed.

NOTE: These pictures are just the demo of our YOUCANIC Scanner, it may or may not be the same but the procedure is the same.

OBD stands for “On-Board Diagnostic.” Most modern vehicles now include an OBD port, which can be utilized by a scanner to communicate with your vehicle. An OBD-II scanner plugs into the socket designed to help automotive technicians interpret faults and other issues that your Skoda may be experiencing or have recorded. Most SKODAs now have OBD-II Ports, including Karoq, Joyster, Mission, Superb, Octavia, and newer models.

Now, your car has many parts that may seem overwhelming, but with this guide, we’ll delve into the steps for reading, interpreting, and erasing codes, live data, and freeze frame data, and the significance of professional-grade scanners that could save you not just hundreds but thousands on repair if appropriately diagnosed.

It seems like I can’t clear the codes, why?

Once you’ve identified the DTCs, you may be tempted to clear them, hoping to continue driving your Skoda, and the problem magically disappears. Clearing the codes can temporarily remove the “Check Engine” light, but it doesn’t address the underlying issue. It will always come back. Here are also some lists of why you cannot clear the codes of your Skoda:

• Use a Professional-Grade Scanner: Ditch the generic scanner and upgrade to a professional-grade one like the YOUCANIC scanner. Generic scanners are like trying to open a Ferrari with a Ford key – it won’t work! YOUCANIC, on the other hand, is like the master key to your Skoda’s diagnostics, unlocking hidden diagnostic powers and letting you clear codes that would otherwise remain stubborn and hidden.
• Underlying Issues: Before you clear fault codes, remember to address the underlying issue that triggered them in the first place. Clearing codes is like patching a leaky pipe without fixing the cracked valve—it’s just a temporary fix. The ‘check engine’ light will surely come back and haunt you.
• Continuous Fault Monitoring: Like the SRS system, certain fault codes may be cleared by disconnecting the battery (like a reset). However, they will reappear even after clearing until the root cause is resolved. It is a persistent reminder to fix the problem, not just mask it.
• Proper Clearing Procedure: It’s essential to follow the correct steps outlined in your diagnostic scanner’s user manual to clear fault codes effectively. If unsure about the clearing procedure, consult a professional for guidance specific to your scanner and Chrysler model.

YOUCANIC Full System Car Diagnostic Scanner

Click here and check our article if you want to know more about the check engine light on your Skoda.

What do History, Current, and Stored DTCs do?

1. History: These codes indicate past issues that have resolved themselves or are no longer causing the “Check Engine” light to illuminate. They typically do not require immediate attention.
2. Current Codes: These codes represent current or active problems that require immediate diagnosis. They indicate a present issue or malfunction in a specific system or component of the vehicle that needs to be addressed. They will remain displayed until the underlying issue is resolved.
3. Stored Codes: These codes are inactive but remain stored in the computer’s memory, recording previous issues. These can provide additional information about past issues as a historical reference for previous faults. While they may not be active, they can offer insights into the vehicle’s history and aid in the diagnostic process.

Please click here if you want to know more about the history, current, and stored DTCs.

The purpose of Live Data and Freeze data?

Live data allows you to monitor real-time sensor readings, providing valuable insights into the car’s operation. On the other hand, Freeze frame data captures a snapshot of vehicle conditions when a fault code is triggered. Analyzing this data provides context and aids in pinpointing the root cause of the issue.

Frequently Asked Questions:

Remember, your Skoda deserves the best care, and understanding DTCs is a crucial step in maintaining its peak performance and ensuring your driving pleasure remains uninterrupted.

Check our article here if you want to know what is the best OBD-II for DIY Enthusiasts: Best OBD2 Scanner For DIY Auto Repair – YOUCANIC

References:

1. The Drive – What Is an OBD2 Scanner and How Does It Work?
   What Is an OBD2 Scanner and How Does It Work? | The Drive
2. YOUCANIC – DTC Fault Codes
   DTC Fault Codes – YOUCANIC
3. ConsumerReports – What Does the Check Engine Light Look Like, and What Does It Mean?
   What Does the Check Engine Light Look Like, and Really Mean? – Consumer Reports
4. YOUCANIC – Current / Stored / Active / Past / History Fault Codes Explained
   Current / Stored / Active / Past / History Fault Codes Explained – YOUCANIC

---

Related Products

---