2007 Chrysler 300 2.7L with engine code P0128

Question

My electronic throttle light is also on when the car is cold, however it didn't come up on the test auto zone did. Any ideas why? How do I find out if something is wrong with my electronic throttle?

Answer 1

p0128 is related to the cooling system. you might have a stuck thermostat if there are no leaks and the coolant level is correct.

start by replacing the thermostat

there is coolant running through the throttle body if the thermostat is stuck open and it wont warm up the throttle body fast enough that might happen

also the throttle body could be dirty and may need to be cleaned with throttle body cleaner 

Answer 2

P0128 Chrysler Code - Thermostat Rationality
Read more: https://www.autocodes.com/p0128_chrysler.html