Help with codes 44, 51, 87 and 95

derekhay316

Registered User
I just ran a KOEO test today and here's the codes that it came up with:
44 - Exhaust Gas Temperature Switch failed; catalyst too high temperature
51 - Coolant temperature sensor circuit open
87 - Fuel pump primary circuit fault
95 - Fuel pump circuit open, ECA to motor

My car is in a state where it cannot start, so from codes 87 and 95 I came to the conclusion that my fuel pump has finally died, so I'm in the middle of replacing it. IS there anything besides the fuel pump that needs to be changed here? Any fuses or something? Also how do you replace the coolant sensor? And what the heck does code 44 mean? Thanks a lot for your help.
 
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