There is a video i am trying to find of repairing this code by spraying a cleaner on a sensor wire in the intake manifold and replacing the air filter.
Spraying cleaner on a wire should NEVER fix this code! You might be thinking of cleaning the MAF and replacing the air filter which, could possibly fix this code. The MAF is plugged into the intake boot that connects to the air filter housing. It's a little black box with 2 small bolts holding it in and a connector plugged into it. It should ONLY be cleaned with MAF cleaner and you should not touch the sensor portion with hands/fingers (even gloved) because it's super sensitive to contamination.
That said, while replacing the air filter (if more than 6 months old) is always a perfectly acceptable thing to do, you should really diagnose any issue BEFORE throwing parts at it. You could have a totally different problem and this "repair" will just throw money at the issue without fixing the actual issue. You might actually have a cat that has failed and will need to replace it. OR you might have a bad O2 sensor or A/F sensor. OR you might have a cat that has been saturated and destroyed because you have a leaky injector causing the engine to run rich. If you have a decent scan tool that can capture live data, you can narrow down and/or eliminate some possible causes. If not, it's best to just take the van to a trustworthy mechanic. The big issue here, though, is that cats rarely fail these days unless there's something else wrong. Mechanics can "fix" the issue of a saturated cat by replacing it for $1000 (unless in CA; then, it's $2500) and then you'll drive for another 20k miles and it will be saturated again.
