P0116

Forkster · February 12, 2011

This past couple of weeks I noticed my temperature gauge wasn't working well - it sometimes worked, sometimes not - or that the engine was running very cold (doubtful).

Today, my 2006 GMC Sierra 1500 SLE2 5.3L threw a P0116 code. Any relation or is this something else?

I have modified my engine block plug and replaced the end with a generic one to remove the temperature sensor. This cause that?

P0116

Category: Powertrain

Definition: Engine Coolant Temperature Sensor 1 Circuit Range/Performance

txab · February 12, 2011

You're talking about the block heater right? That you removed the temp sensor on the plug for it. Yes you can get a code set. Don't know if it's that specific one, but I do know there is a problem. Thta't one reason why the stock units don't come on until is pretty damn cold.

Forkster · February 13, 2011

You're talking about the block heater right? That you removed the temp sensor on the plug for it. Yes you can get a code set. Don't know if it's that specific one, but I do know there is a problem. That's one reason why the stock units don't come on until is pretty damn cold.

Yeah, I cut the block plug heater off at the end (where the temp sensor is) and presto - block heater comes on when I say.

So, that code is for the block heater plug end then? (phew!)

CDUBBS63 · December 11, 2013

I have two pickups (2012 and 2000) both with 5.3L engines and an 2006 Impala SS w/5.3L. the last couple of days the Impala has shown the temp code P0116 and we had the block heater plugged in because it has been -25c to -30c but was only -15c the last couple of nights. It has a factory block heater but it doesn't have a temp sensor on the plug (it's original and I'm the original owner and haven't changed it) How can I reset the code? I will remember not to plug it in when the temp is above -18c.