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Mazda protege5 p0117?

Old 06-19-2018, 02:22 PM
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Join Date: Jun 2018
Location: Atlanta ga
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Default Mazda protege5 p0117?

I brought a 2003 mazda protege5 2.0l 5 speed. Check engine light came on, code p0117 Coolant temperature sensor low circuit. The temp gauge start to rise to the H. Check fans, fans comes on between 190-205 Replace coolant temp sensor, replace thermostat, replace coolant temperature connector. Code still didn't go away. So now I took my volt meter ohm out the violet/Yellow wire that' going to my pcm, it' 0 out. Ohm out the ground, the ground needed some work. Replace the grounds wire from the battery to frames. Light still on. So now I'm guessing is my PCM is bad? If so can I upgrade to an mp3 pcm. I need more info on pcm swap.
Old 06-23-2018, 09:35 AM
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Join Date: May 2017
Location: SoCal
Posts: 52

Did you drain and flush the system and replace the coolant?

Use a non-contact IR thermometer to measure the temp at the radiator inlet and thermostat housing.

Did you reset the codes after the other part swaps?
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