The components in the N28 / NHTSA 13V-234 recall did exactly what they were recalled for. My check engine light came on a few months back so I brought it to be diagnosed at a parts store and diagnostic scanner listed P codes for possible O2 sensor. I brought my 2013 Jeep Wrangler Sport into a Jeep dealership(#1) in Friday, November 1st, 2024 and upon the first inspection, they found a couple of issues and printed an quote for $127.33, I signed off on that quote. Then another hour or 2 passed by, they brought me a revised quote for over $600, which I was still okay with and signed off to have repaired. Then they offered to bring me home after hours of sitting in the lobby. The next day, I get a link to review the revised inspection and it was over $2400. The engine charge was over $1900 caused by the N28 recall. I asked them to just do the recall because I could not afford it the remaining. Upon looking into forums, documents & diagrams researching online specific to the N28 recall, I reached out to the manufacturer quite a few times by phone and email. I was working with someone who I thought would be helpful, since he suggested I call a different Jeep Dealership (#2) Service Dept. and speak with a mechanic there. I spoke with a mechanic at #2 and sent #1’s inspection report, and #2 dealership’s mechanic confirmed the issues are connected & caused by the recall. The manufacture’s contact (that I thought was more helpful than the ones I spoke with prior) was emailing me. I reported back to the contact on November 14th, 2024 what dealership #2 said and he never responded. I followed up for a response on November 21st, 2024. I still have no response as of January 30th, 2025.