I’ve been battling P1117 and P1118 for about a year now. In addition to the only cooling system component not being changed being the water pump (and I guess the expansion tank too) I’ve pretty much given up and told Tom at Great Basin Rovers he gets to fix it.

Well this one came up today (of course in addition to P1170) and I was wondering if there’s a part I missed? I’ve replaced both coolant temp sensors with OEM parts but never heard of this one before.

Ideas?