VW Crafter IAT Sensor Issues, Symptoms and Solutions

Had a similar engine issue with my VW Transporter 2.0 TDI from 2011. As someone with some experience working on VW diesels, I recognized the symptoms immediately when the temperature sensor started acting up. The car sensor symptoms were identical, rough running, power loss, and check engine light. The workshop confirmed the intake air temperature sensor was failing through diagnostic testing. The temperature reading was inconsistent, which affected the air-fuel mixture. Total repair cost was 155€, including parts and labor. The fix was straightforward, they replaced the faulty air sensor and cleared the error codes. Engine performance returned to normal immediately after. Could you share your specific error code and whether youve noticed any changes in fuel consumption? Also, what engine variant does your Crafter have? This information would help compare if were dealing with the same temperature sensor setup. One thing to watch for, make sure the workshop checks the wiring harness connecting to the sensor. Sometimes the issue isnt the sensor itself but damaged wiring. This can cause similar symptoms but requires different repairs.

Last service was at 164000KM, about 4 months ago. The IAT sensor symptoms you described match exactly what Im experiencing. My engine shows the same power loss and rough running issues. The error code from my scanner is P0113, indicating high input from the intake air temperature sensor circuit. The workshop quoted 180€ for diagnostics and potential sensor replacement. Before proceeding, I checked the wiring harness connection myself and found no visible damage or corrosion. The inconsistent temperature reading suggests its likely the sensor itself failing. What caught my attention in your response is the quick fix and reasonable repair cost. Did you notice any warning signs before the complete failure? My fuel consumption has increased by about 2L/100km over the past few weeks.

Yes, looking back at my Transporter case, there were early warning signs I initially missed. About 3 weeks before the complete failure, I noticed slight hesitation during cold starts, especially on cooler mornings. The car diagnostic data showed occasional temperature reading spikes, but they were intermittent. The increased fuel consumption you mentioned matches my experience exactly. I saw similar consumption increases because the engine management system was receiving incorrect air temperature readings, leading to poor fuel mixture calculations. P0113 is the same error code my car diagnostic tool showed. Since your vehicle has similar mileage to what mine had when the sensor failed (mine was at 158000km), its likely the same issue. The temperature sensor tends to deteriorate gradually in these engines. The 180€ quote sounds reasonable considering current parts prices. Our repairs were slightly cheaper because we caught it earlier, before it affected other systems. Make sure they use a quality replacement sensor, some aftermarket parts can cause issues down the line. The quick performance recovery after replacement confirms this is a common wear item on these engines. Just ensure they clear all stored error codes after the repair.

Thanks for sharing your insight about the temperature sensor issues. Ive got a 2.5L diesel variant (BJK engine code). Based on what youve shared, Im now more confident about moving forward with the repair. Yesterday I pulled the error codes again and its still showing P0113. The fuel consumption is now up to 2.5L/100km more than normal. Im going to book it in next week for the sensor replacement. The 180€ quote seems fair, especially after comparing it with your repair costs. The air temperature sensor symptoms match perfectly with what you experienced. My diagnostic tool also shows those inconsistent temperature readings you mentioned. Since the wiring looks good and the car sensor is original with high mileage, replacement seems the logical next step. Did you stick with OEM parts for your repair? The shop suggested either genuine VW or Bosch. Given the critical role of the intake air temperature sensor in engine management, I want to make sure I choose the right part. Think Ill get it done soon before it potentially causes more issues. Really helpful to hear from someone who went through the same problem with such a positive outcome.