Continental ECUs are widely used in Korean-manufactured vehicles, particularly under the Hyundai and Kia brands. The SIM2K-34x and SIM2K-24x families power a large share of naturally aspirated and turbocharged petrol engines across Asia and global markets.

Deleting DTC Codes in Continental ECUs SIM2K-34x / SIM2K-24x

These ECUs are highly prone to persistent DTCs after mechanical changes like decat, lambda delete, or EGR block-off. Without a proper ECU edit, these faults continuously trigger the check engine light and prevent successful inspection readiness.

The most common DTCs include:
• P0420 – Catalyst System Efficiency Below Threshold
• P0036–P0039 – Rear Oxygen Sensor Circuit Faults
• P0136–P0139 – Lambda Sensor Heater Circuit Faults
• P0300–P0304 – Random/Multiple Misfire Detected
• P0403 – EGR Circuit Malfunction

These faults are frequently found in:
• Hyundai: Elantra, Sonata, Santa Fe, Tucson, ix35
• Kia: Cerato, Optima, Sportage, Carens, Sorento, K3
• SsangYong: Korando

How to Permanently Delete ECU Codes (Kia & Hyundai)

These ECUs have two areas in the ECU dump called:

1. Error Codes Area – where DTCs are stored in a patterned layout
2. Counters Area – where a value linked to each code determines if it triggers a light

What makes SIM2K ECUs unique is the inline structure of codes and counters: the counter directly follows the 16-bit DTC in memory.

To remove DTCs properly:

• Open the file inside WinOLS
• Search for known codes to locate the DTC block
• Create the DTC codes and counter tables
• Zero out the counter directly after the target DTC

This structured method ensures the DTC is disabled at the source , not masked or bypassed.

How to Delete DTC from SIM2K ECU?

With the SIM2K-34x / 24x platform, there are a few key steps for correct DTC OFF:

1. Search for pairs like 2187 / 2188 to identify the start of the fault table
2. Align the structure into 9 columns
3. Look for irregular patterns — if the top line of the table no longer repeats, you’ve reached the end
4. Zero the counter following your target DTC

As seen in the two dimensional layout, this structure is standard across most Korean SIM2K ECUs , simplifying the learning curve for technicians.

WinOLS Mappack for Continental SIM2K DTC OFF

Understanding the theory is one thing , applying it to real files is another. That’s why we offer a dedicated WinOLS mappack and step by step video training for SIM2K ECUs.

Our mappack includes:
• Predefined error code zones
• Correct column structure (9-column map)
• Aligned counters and known code pairs
• Support for both 24x and 34x dump formats

Support: Schiller Tuning Remap & DTC OFF Assistance

At Schiller Tuning, we’re committed to more than just DTC deletes , we offer full remap support for SIM2K ECUs and more. Whether you’re working on stage 1 remaps or need help with special features like EGR OFF, RPM limiters, or pop & bang setups, our team is here to support you.

With years of hands-on experience and proven tuning strategies, we provide:
• Real-world tested tuning files
• Custom solutions for naturally aspirated & turbo engines
• Personalized training & 1:1 guidance with complex cases

 Finish DTC Deletes the Right Way
Don't rely on trial-and-error. With WinOLS, structured guidance, and real dumps from Korean ECUs, you can:
• Eliminate P0420 and lambda heater errors
• Clear misfire DTCs for modified ignition systems
• Disable EGR faults without affecting drivability

 Whether you're tuning Hyundai, Kia, or SsangYong ECUs , this is the guide that works.