C3 Sx

[hgv1]

think i have made big mistake buying one of these cars 

the temp was on one bar all way home  come to it next morning and turned ignition on went to start engine and fans come on and temp gauge was on full .getting p0115 code .cleard code switch ignition off then back on after few seconds temp gauge goes to full start engine and fans come on . changed temp sensors still same 

help before i send it to scrap yard 

[paul.h]

Welcome to the forum.

 

The list of fault codes on here gives:

P0115 Engine Coolant Temperature Circuit Malfunction

 

When you replaced the temp sensors did you get the new ones from a Citroen dealer ? On a recent topic a member replaced a temp sensor with a low cost one from ebay and the fault did not clear - it turned out the ebay sensor was not right and another new one from a Citroen dealer cured the fault.

 

The wiring should also be checked for any damage and the connector pins should be checked to make sure they are clean. At the ecu end make sure the connectors are clean and dry.

 

I have deleted your other similar posts so any replies are in one place but I am not sure if this from one of them refers to your car:

iannez, on 29 Nov 2006 - 7:16 PM, said:

we had pluriel in today with similar fault. open circit fault on lexia so checked switch and wiring and all ok. live data reads -48 degrees which tecnical say is default setting so looking like ecu fault.

i have a c3 that i just bought for the wife with same problem the last owner had a new key put on the car by citroen and the day after i purchased it i got it the temp went to full as we started car and fans kicked in like yours checked live data and it to says - 40 i changed sensors but still the same can the ecu be reset and could the dealer be to blame for the fault after the key was programmed in