VW Suran Power Loss + Check Engine Light Fix Needed

Had a similar situation with a VW Golf GTI 2012. The check engine light and power loss were caused by faulty third-party chip tuning. The scan tool revealed multiple diagnostic codes related to boost pressure and fuel mixture. The original ECU mapping was corrupted, causing inconsistent performance and engine protection mode activation. An auto scanner showed the engine was getting incorrect fuel mapping signals. The fix required: Complete ECU reset to factory settings, Removal of unauthorized tuning software, Reprogramming with genuine VW software, Clearing all stored fault codes from the car computer, New sensor calibration This was a serious issue that could have caused long-term engine damage if left unresolved. The problem never returned after restoring factory settings. For your Suran, recommend having a certified technician perform a full diagnostic scan. Unauthorized ECU modifications often cause these exact symptoms. Get the car computer checked for any programming irregularities, especially if previous owners might have modified it.

Thanks for sharing that experience. Dealing with a very similar reduced power issue on my Spacefox right now. The check engine light started flashing and the diagnostic code readings point to fuel injection problems, just like in your case. Planning to take it in next week to have the ECU checked and possibly reset. The constant dashboard light warnings are really concerning. Could you share how much the complete fix ended up costing? Also wondering if youve had any recurring issues since getting it sorted? Seems like these VW models can be sensitive to ECU modifications. A proper auto scanner reading definitely helps narrow down the real problem.

Since getting my VW Golf GTI fixed, the engine has been running perfectly with no recurring dashboard light issues. The vehicle diagnostics confirmed the fault code was completely cleared after removing the problematic third-party tuning. The total repair cost was 180€, which covered the ECU reset and proper reprogramming. While it wasnt cheap, the expense was worth it to prevent potential long-term engine damage. The scan tool results now show everything running according to factory specifications. Based on your description, it sounds exactly like what I experienced. Getting a proper diagnostic check and ECU reset from a certified technician should resolve your power issues. The car computer is quite sensitive to unauthorized modifications, but once restored to proper settings, these problems typically dont return. Make sure they do a complete scan to verify all systems are communicating correctly after the fix. The investment in proper repair will likely save money in the long run by preventing more serious engine issues.

After reading about similar experiences, I finally took my Suran to a certified VW technician last week. The scan tool confirmed what I suspected, the ECU was showing multiple fault codes related to the fuel system. The mechanic found unauthorized modifications in the car computer from the previous owner. They performed a complete reset, removed the problematic programming, and restored factory settings. The check engine light is now off and the power issues are completely resolved. The total repair came to 220€, including diagnostics and reprogramming. While not cheap, the vehicle is running perfectly now with no warning lights. The proper vehicle diagnostics really helped identify the root cause quickly. Glad I got it fixed properly instead of trying quick fixes. The engine response is much smoother and more consistent now. Having a competent technician who understood these specific engine issues made all the difference.