136k miles and I just replaced the battery and alternator last week. Now what? Engine light came. Diagnostic tool shows its a P0128. Usually, it's a failing thermostat. And in this case that's exactly what it was :)

Supplies for 2015 Grand Caravan Thermostat Replacement
- Lisle 24680 Spill Free Funnel https://amzn.to/3RgqVa4
- 1 gallon radiator fluid https://shop.advanceautoparts.com/p/p...
- Integrated housing thermostat w/seal https://shop.advanceautoparts.com/p/c...
- ODB Wireless Code Reader/Diagnostoc Tool https://amzn.to/3mRAiC2
- ODB Fusion App iPhone https://apps.apple.com/us/app/obd-fus...
- ODB Fusion App Android https://play.google.com/store/apps/de...
- Oil pan to collect coolant https://shop.advanceautoparts.com/p/f...

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