VW Caddy IAT Sensor Issues: Symptoms and Solutions

I experienced a similar issue with my VW Golf 2019 gasoline model. Having some experience with basic car maintenance, I initially thought it might be a simple fix, but the symptoms matched what you are describing. The intake air temperature sensor on my Golf was indeed faulty, causing rough idling and reduced power. The IAT sensor readings were inconsistent, which triggered the check engine light. After attempting to clean the air sensor myself, I realized it needed professional attention. My workshop diagnosed the problem quickly with proper diagnostic equipment. They confirmed the temperature sensor was sending incorrect readings to the ECU. The fix involved replacing the IAT sensor and recalibrating the system. Total repair time was about an hour, costing 155€ including parts and labor. To better assist with your situation, could you share: Current mileage on your Caddy, Whether the symptoms occur more during cold or hot weather, If the rough running is constant or intermittent, Any recent maintenance work performed These details would help determine if your issue is identical to what I encountered with my Golf. The air temperature readings are crucial for proper engine management, and a faulty sensor can definitely cause the symptoms you describe.

I had my last service at 121000km, and these issues started appearing shortly after. I can confirm the rough running happens mainly during cold starts and improves slightly as the engine warms up. The car diagnostics showed error code P0113 which points to the IAT sensor circuit running high. The workshop suggested a full sensor replacement rather than just cleaning, quoting 180€ for parts and labor. Before committing, I wanted to verify if this matches what others paid for similar car sensor repairs. Based on your experience, this pricing seems in line with market rates. Thanks for sharing your experience with the temperature reading issues. It helps confirm my suspicions about the faulty IAT sensor being the likely cause.

The price quote you received sounds about right based on my Golf repair. I paid slightly less at 155€, but prices can vary, and the 180€ quote for your Caddy seems reasonable for an OEM sensor replacement and labor. After my repair, I learned that intake air temperature sensors commonly fail around the 120000km mark, which matches your situation. The cold start symptoms you describe are classic signs of a malfunctioning air sensor. The P0113 error code definitively points to an IAT sensor issue, just like in my case. The temperature readings from a faulty sensor confuse the ECU, especially during cold starts when accurate readings are most crucial. Given the diagnostic tool confirms the error code and the symptoms match, I would proceed with the replacement. In my case, the new sensor completely resolved the rough running and power issues. Just make sure they use an OEM temperature sensor rather than an aftermarket part. The small price difference is worth it for the reliability. After my repair, I had no recurring issues with engine performance or temperature readings.

Thanks for sharing those details about the IAT temperature sensor issue. The 180€ quote from my workshop seems fair after hearing about your Golf repair cost. The timing of these issues starting right after my 121000km service matches what you mentioned about common failure points for these sensors. The error code P0113 and cold start symptoms align perfectly with your experience. Since my diagnostic tool shows the same sensor-related problems you encountered, I will go ahead with the full replacement. I appreciate the tip about insisting on OEM parts for the air sensor, definitely worth paying a bit more to avoid future engine issues. Will schedule the repair this week and make sure they use the proper parts. Your experience has been really helpful in confirming both the diagnosis and the reasonable repair cost. Looking forward to having proper intake air temperature readings and normal engine performance again.