Hello, we drive an XC70 AWD D5 with 185kw, built in 2013, Km-Stand ca 254000. Around March / April 22 the car did not want to start several times when it was warm and ran partly in the emergency program. As a result a new throttle was installed in a free workshop due to the error messages in the memory. Subsequently the car ran smoothly until it had a power drop at about September / October 22. This had an effect so that the car after starting as in the emergency program without turbo, after about 5 – 10 km but pulled quite normal. During the ride the problem did not appear, there was no error message or warning indicator in the display. The error message was again ECM-21750, throttle valve, low air flow. Also did not occur at every start, about every 5th time. Now was renewed by the free workshop of the “load air hose pressure tube throttle valve” and “load air hose intake tube” (So it was on the bill). When the same problem reappeared in February 23, the free workshop sent me to the Volvo dealer because he could read out more. He had as the only suggestion to renew the throttle valve. My free workshop had on guarantee changed the throttle valve built in the previous year. Afterwards everything was fine again. In June 23 the error (P2175) occurred again with the same symptoms. The throttle valve was removed for inspection and sent in, but no error was found. The pressure tube was renewed. Again everything was fine. In December 23 it started again with the same problems. Again a new workshop was tried. Here the Lambda probe was renewed. Again everything was fine until it started again in November 24. Same problem as always, but this time with engine control light, and emergency run at almost every start. After at least 10 km drive everything is normal again, the vehicle pulls up again a cold start. A new battery has The only other error messages in the memory refer to the Haldex: P188913 Oil Pressure Pump Performance The normal driving cycle of the Volvo is 2 x 25 km a day, a bit of city, short highway, then highway and back. In between 1-2 x per month a longer highway route. Since both my free workshop and Volvo has no further idea, except gradually to exchange all parts, any idea would make me a positive Erge bnis leads to joy. Thank you very much