Take the RJ01228542 code, run it through every database available, hire your own inspector, and verify the "ENG" with your own eyes and ears. Do that, and you will either walk away with a reliable home on wheels or the confidence that you dodged a costly mistake. Happy (and safe) camping. Disclaimer: This article is for informational purposes. Always consult a licensed mechanic and RV inspector before purchasing any recreational vehicle. The serial number RJ01228542 is used as a representative example; actual vehicle specifications may vary.