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Discussion Starter #1
I hav three engine codes: P11CB, NOx sensor; P01F0, coolant temperature below diagnostic monitoring temp; P2610, Control Module IgnitionOff Timer Performance.
The coolant temp says it turned on check engine light. Is this a thermostat issue? Is it difficult to change the thermostats and should I use any special t-stats?
 

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It is usually a connection issue at the Coolant temp sensor. It is located just to the left of the thermostat housing as you aer looking in the engine bay from the front.

It can also be the sensor itself but most often a connection issue.

I sometimes get that code on cold mornings after compressing the wires to the lead when replacing the thermostat housing. (I know, I goofed) I clear it and it does not reoccur til the morning temps is cold again.
 
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