RollTideW163

I recently changed the rear airmatic struts to new Arnott's and drove probably for a month with no problems. I had changed them because the rear struts were making noise, like air was being released in spurts and the "bowling ball in the trunk" sound. After replacing them these noises went away.

Yesterday I got the Airmatic Visit Workshop message and no lowering of the car was visible. It could have been my imagination but it could have felt more stiff too.

I ran the codes with iCarsoft under suspension and got:

P132201 (the fault code is not found in the database)
P132200 (the fault code is not found in the database)

I looked these up and didn't find much other an Audi TSB that called it "DTC P132200 (Knock Sensor 3 Signal Too High)" - ??? unrelated to suspension.

No other codes came up under suspension.

A couple other points
- I have long heard a subtle rattle from the left front suspension. I changed every component in the front suspension other than the strut, and that was next on my list.
- The vehicle maintained its level overnight

I plan on doing the soapy water around the top of the rear struts, check the relay and double check the connections of the wires of the rear struts.

Any additional insights or ideas would be appreciated. I will also write Arnott asking if they know what these codes are - that's what I am most curious about.

Thanks.