2011 Volvo XC90 3.2 2wd multiple codes

Question

Hello Scotty how are ya doing, I hope all is well. I have a 2011 Volvo Xc90 3.2 2wd Automatic with 122,000 miles; and a bit of an odd situation. So The car currently has a Tpms light and check engine light on the dash. The check engine light is due to there being an efficiency code for all 4 of the catalytic converters, I believe it is not related to the cars electrical issues but rather there is a decent exhaust leak(Let me know your Thoughts on this?). But on to the odd ball electrical problems, as I stated earlier the only light that ever illuminated besides the check engine light was the TPMS light which was never much concern to me as for I check my tire pressure everywhere week-2weeks depending on the weather. But recently I planned on selling the car and one of the first people who planned on buying the car had me bring it to a mechanics shop, where he scanned all the modules and pulled a handful of codes I never knew existed. We both agreed that selling the car wasn't in either of our interests at this point, so I brought it home and hooked it up to my scan tool and did a full module scan then I got back the same codes. I have photos if you'd like but ill list the codes at the end of this message. The cars TPMS light has been since about 95,000 miles and I was wondering if its possible that the rest of these codes could be a direct result of the 3 failed wheel speed sensors or if that's unlikely. I have removed and visually inspected all the sensors and the rings they ride over, everything seems in order and that they where snugged. There were very small bits of rust on the end of the sensor but not very much. I have yet to clear all the codes and take the car for a drive, nor have I viewed the live data of the sensors before I started but I do plan to check when I go for that drive after new years. Also the car is rust free for the most part the only exception is the exhaust due to it being exposed to salt for the past 3 years, but body & Frame and everything else underneath is perfect in that sense. Thank you and I appreciate it, please let me know you opinions on this car.

ABS-C003A07(Right Rear Wheel Speed Sensor Mechanical Failure; Permanent)

ABS-C003707(Left Rear Wheel Speed Sensor Mechanical Failure; Permanent)

ABS-C003107(Left Front Wheel Speed Sensor Mechanical Failure; Permanent)

ABS-U042829(Invalid Data Received From Steering Angle Sensor Module; Permanent)

ABS-U012600(Lost Communication With Steering Angle Sensor Module; Permanent) {Will View Live Data on this as well over the weekend}

ABS-U000100(High Speed CAN Communication Bus. No Sub Type Information; Permanent)

SRS-E001(Control Module Communication Faulty Communication)

CEM-9C03(Antenna/Light Ring Signal Missing; Not Active)

CEM-1A51(Communication with SRS Control Module Signal Missing; Active)

UEM-0081(Rain Sensor Signal Too Low; Not Active)

UEM-0005(Sun Roof Communication Fault; Not Active)

yaser · Answer

First of all, the TPMS light does not have anything to do with the engine code. With that being said, I'm more concerned about the ABS codes. You can buy and replace the faulty speed sensors easily and most likely it will solve the ABS issues, but if you are not comfortable doing that, you can ask mechanics to check the ABS system with their scan tools to tell you what exactly the issue is.

The SRS code is related to the airbags and I don't think it is a big deal since the car is 10 years old and I would not expect that the airbags will work fine.