Car is a 2007 X-Type 3.0L AWD. Check engine light is on and its throwing code P1647. This is the sensor under the air box, right behind the front bumper isn't it?

The other problem with the car is an intermittent DSC System Fault light which pops up on the dash. I work at a dealership and the mechanics scanned the car with their fancy scanners, and there were a few old stored codes. Most of them were nothing important so we just cleared them out, but the two I took note of were C1A00 "ABS Control Module" and C1A93 " Rear right wheel speed sensor circuit". They told me most likely the car just needs a new wheel speed sensor/ABS sensor as ONLY the DSC fault light came on, not the DSC light AND ABS light which seems to be the problem I've seen on every other thread I've read on this issue. What do you guys think? What other possible things could cause only the DSC fault light to come on?

I know sensors can be goofy, meaning if you don't get the same OE brand that is supposed to be on the car it won't work correctly and the light will still be on. What brand sensors are they supposed to be? What are the part numbers for both of these parts/sensors?

And for any future problems I might have, where can I check to find the correct part numbers myself?

Thanks.

 

C2S43218

Forum sponsor SNG Barrett is a great source for X's. Main page under "stickies" is a free catalog.

 

Plus one for SNG Barratt, they can get you most parts and have parts diagrams online to help you search part numbers.

Specific to this wheel speed sensor, does anyone have advice? I need to replace mine and SNG Barratt has 2 options, one is $175 and the other is $35. Over at Rock Auto I can get the same part for either $28 or $280. Are any of these parts any different?