P0128?
Thread Starter
Joined: Jun 2014
Posts: 1,241
Likes: 47
From: Noblesville, IN
P0128? Was driving my car on the freeway on a chilly night a few days ago when the SES light came on. Plugged the scanner in and it came up P0128. This makes sense since I have a 160 degree thermostat installed. My question is is there a table I can edit or some setting to recalibrate the PCM to the lower temp? Or is my only option to just set the DTC to No Error Reported?
I've never come across this on a GM, but see it on Chryslers all the time.
On the Chrysler stuff there's a pair of scalars for min and max temp to enable t-stat test. You just jack those up to 190/191 (c) and it eliminates the issue.
On the Chrysler stuff there's a pair of scalars for min and max temp to enable t-stat test. You just jack those up to 190/191 (c) and it eliminates the issue.
