. I have a 2000 S70 SE Base NA. The ETM is easy to access and clean so would try that first. Use a lint free towel and clean the butterfly carefully front and back as much as possible not to stress the pivot points. Spray and saturate the clothe rather than direct spraying of the ETM and be careful ...

Check voltages and fuses to the ETM first. Inspect the wiring as best you can. One fault can generate multiple spurious codes so throwing parts isn’t the strategy. There is no substitute to VIDA for running a sweep test and testing the throttle for smooth operation of the blade and sensors, without ...