I've scanned it with an ANCEL tool I bought from amazon, no code was found (this was the basic one), then I bought the LAUNCH ELITE from amazon and scanned with that as well and the only thing that popped up was a code about the system update thing and also the passenger airbag weight because no one was sitting on it, and one about the shelf antenna and brake booster, just wondering if this is concerning or not or if anyone has an idea of what might be wrong with it? It currently has ~260,000 KMs. The car runs fine, drives fine, fuel consumption is about what it use to be (still ~5.8/6.2/L/100KM) the car doesn't overheat or anything either and the oil, coolant and what not looks to be fine. I checked the MAF and the O2 sensor but I couldn't see anything unplugged or wrong with those and I think the launch would have shown that as a fault code, I'm very honestly just contemplating clearing the engine of all codes and then going on with my life unless it comes on again because the dealer wants 220 dollars to check what the problem is.

The codes the LAUNCH picked up were: U3003-16 and it's about the brake booster control unit having low voltage, and B1668 about the RF left shelf antenna being open