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P0128

2020 Indigo

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#8413
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2020 Dodge Charger Hellcat
#1
Will a s180 degree give me this code? Which is basically, temperature low at thermostat, car was bought used and I have a feeling that this was done.
 

NYCSRTATE

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#2
Will a s180 degree give me this code? Which is basically, temperature low at thermostat, car was bought used and I have a feeling that this was done.
I would say yes or the thermostat stuck open.

The powertrain control module (PCM) tracks how long it takes for the engine of your Dodge to reach and maintain the correct operating temperature. When the correct engine operating temperature is reached, the powertrain control module orders the fuel system to enter “closed loop” where readings from the oxygen sensors are used to maintain the efficient air to fuel ratio of 14.7:1. Most PCMs mandate that the engine coolant temperature sensor record temperatures above 160º F within 15 minutes of the engine starting. Additionally, once the 160º F threshold is achieved, the recorded engine temperature must not fall below 160º F during operation. The PCM of your Dodge will record if either of these two criteria are not met. If either fault is recorded again on the next engine startup, code P0128 is triggered.
 

Mean Cat

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#3
Will a s180 degree give me this code? Which is basically, temperature low at thermostat, car was bought used and I have a feeling that this was done.
Did you get that code ? if so, then pull it & see, if it is a 180, you can use a 190 or go back to stock 203.
You can test the one you have in a pot of boiling water to make sure it is opening.
 


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