I've got a 2007 Classic LBZ that keeps throwing a P0116 DTC and turning on the MIL.
It came on the other day when I went to start it and the glow plug light never went out. After about 30 sec of waiting I went ahead and started it and the MIL came on, glow plug light went out when it started. Checked codes and saw the P0116. Cleared it and I drove around a little while and then went to start it later and the code and MIL came back. I haven't been driving the truck but once every week or 2 for the past couple months, so the batteries were getting kind of weak and hard starting as the temps started to drop this fall. I've been driving it more now and the batteries are staying good and charged, but the code keeps coming back. The glow plug light doesn't seem to ever want to go out before starting when cold. It doesn't come on after it is already warmed up and I go back to start it up.
I saw that the code is for ECT sensor performance, my gauge temp seems to fluctuate around 185 like normal and I watched it on my autocal also and the sensor appears to be working. I haven't done anything to the truck recently and it seems to be running like normal. Just tired of looking at the MIL.
It came on the other day when I went to start it and the glow plug light never went out. After about 30 sec of waiting I went ahead and started it and the MIL came on, glow plug light went out when it started. Checked codes and saw the P0116. Cleared it and I drove around a little while and then went to start it later and the code and MIL came back. I haven't been driving the truck but once every week or 2 for the past couple months, so the batteries were getting kind of weak and hard starting as the temps started to drop this fall. I've been driving it more now and the batteries are staying good and charged, but the code keeps coming back. The glow plug light doesn't seem to ever want to go out before starting when cold. It doesn't come on after it is already warmed up and I go back to start it up.
I saw that the code is for ECT sensor performance, my gauge temp seems to fluctuate around 185 like normal and I watched it on my autocal also and the sensor appears to be working. I haven't done anything to the truck recently and it seems to be running like normal. Just tired of looking at the MIL.
