Air suspension and/or Fuses 101?

[Ricky Bobby]

I will guarantee and bet a solid Benjamin Franklin that when your air suspension was leaking it burned the compressor out and now it's not running in spec to the module.

Your code is an accumulator filling code due to the compressor not reacting fast enough to fill within spec. You can rebuild the compressor with a seal kit readily found on eBay "wabco compressor repair" for $50, reset the module faults, and enjoy not looking at the SLS fault anymore.

It's a common problem when leaking air suspension goes too long without fixing, good luck but based on what you're saying that is your issue! You are almost there don't give up now!