P0128 cummins

Log in. Sign up. Home Forums

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. I changed the thermostat, then the temp sensor.

P0128 cummins

Getting P code. Thread Tools. Received 21 Likes on 19 Posts. Last few days its been VERY cold. Currently and when I first start the truck I get this code. Says T-stat rationality Is it related to the ambient cold temps? Just curious. View Public Profile. Find More Posts by Scotty. Likes: 6. Received 64 Likes on 44 Posts. Find More Posts by BigIron Received 1 Like on 1 Post. Plugged in all the time.

Depending upon the results of the comparison, a pass, fail, p0128 cummins, or inconclusive condition is determined. Joined Mar 27, Messages Reaction score P and P

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox! Log in Register. Search titles only. Search Advanced search….

Forgot your password? By MoparMan. This diagnostic looks at the how cold the system is at start up, what the inlet air temperature is, and the amount of fuel burned during that drive cycle. The PCM estimates what the coolant temperature should be. If the coolant temperature is not above a calibrated threshold, the rationality fails. The PCM assumes that the thermostat is stuck open.

P0128 cummins

Log in. Sign up. Home Forums March's Cummins of the Month is now open for entries! JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Sort by Oldest first Oldest first Newest first Most reactions.

Gemma 77 painting

If I turn the AC off, the temp runs between and Log in. This predicted engine coolant temperature is compared to the actual engine coolant temperature as read by an engine coolant temperature sensor. This is an older thread, you may not receive a response, and could be reviving an old thread. Members Current visitors New profile posts Search profile posts. I wonder why they are getting these codes with a stock thermostat? Sort by Oldest first Oldest first Newest first Most reactions. Sign up. With the scan tool, monitor the coolant temperature for 10 minutes. Turn the ignition off. I can't find any threads on it. Existing user? P and P Just curious.

Log in. Sign up. Home Forums 4th Gen Ram 6.

The PCM assumes that the thermostat is stuck open. The following errors occurred with your submission. July 19, Log in. Posting Quick Reply - Please Wait. Says T-stat rationality By MoparMan. Find More Posts by klxa2. The coolant temperature does not rise above a calibrated amount over a calibrated amount of time. I noticed my engine was staying around Log in. This code has not come back since. You should upgrade or use an alternative browser.