Hi Jeanie,
My Sensor also stopped working at some point last year. I chatted online with OilPal and they sent me a replacement free of charge despite being well out of warranty… (I did pay for the shipping cost to send my old sensor back to them!).
I have now been using them for a few years… Top company and top support… very helpful.
My “new” sensors is now working for the past 8 months, all good …
Very happy with the product, solution and company.
BR
Tony.