1. nope, that wont cause this code to set on its own. this is a circuit related code, not performance related. the problem is either the thermostat, ecm, or wiring between the 2, most likely a bad thermostat, they have alot of problems.

  2. These thermostats are notorious for being problematic. There could be a warranty for the thermostat itself through wherever you got it replaced, but the labor to replace it with a new one again probably would not fall under warranty. It will depend on the shop. Good luck!

  3. Thanks man. Very frustrating issues. I'm wondering if there could be a leak somewhere. Do you know how I could check for evidence of a leak?

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