P0128 cummins

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Log in. Sign up. Home Forums February's Cummins of the Month is now open for entries! Your true valentine! JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.

P0128 cummins

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. The coolant temperature does not rise above a calibrated amount over a calibrated amount of time. Turn the ignition off. With the engine cold, verify the level of coolant in the cooling system. Is the cooling system full of coolant? Start the engine. With the scan tool, monitor the coolant temperature for 10 minutes. Did the coolant temperature change over time while the engine was running? July 19, Please take the time and give the author a 1 to a 5-star rating for the information you have gained from anywhere on the website.

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P0128 cummins

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.

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Recommended Communities. He said he had seen quite a few of those codes and that a flash was coming soon. Sign In Sign Up. Tom-G 76 Replies. Now that I think about it When Monitored: While the engine is running. Thread Tools Show Printable Version. If the coolant temperature is not above a calibrated threshold, the rationality fails. Explore Our Forums. The following errors occurred with your submission. Come join the discussion about reviews, drivetrain swaps, turbos, modifications, classifieds, builds, troubleshooting, maintenance, and more!

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Log in. It is YOU that has to take them to court if they deny. Once home ran alpha OBD and we had a stored P code, thermostat implausibility which indicates the coolant temps were too low in the truck. This is an older thread, you may not receive a response, and could be reviving an old thread. The error between the predicted engine coolant temperature and the actual engine coolant temperature is calculated and integrated over time. Install the app. I sure feel sorry for people who don't know what is under warranty and what things actually cost 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 attached patent information offers an explanation for how the system works. Most Helpful Newest. JavaScript is disabled. If MoparMan.