CitroŽn C3 2006 sx manual Engine overheat
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Thread: CitroŽn C3 2006 sx manual Engine overheat

  1. #1
    Tadpole
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    Default CitroŽn C3 2006 sx manual Engine overheat

    Hi,
    I have a 2006 CitroŽn C3 that has a fault come up "engine overheat". It only ever happens coming down the same Hill. The sensors have been changed, the computer isn't showing any other faults and the actual engine isn't overheating. The coolant system is fine too, it is just the warning. The battery has also been checked for lode. My mechanic is stumped for ideas. Can anyone give me any clues? An auto electrician is my next port of call. Thanks in advance.

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  2. #2
    Fellow Frogger!
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    What other things on that cct? Do you have the circuit diagram? Fan functioning....

  3. #3
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    I think I have the diagrams somewhere if needed. Sassy, do you have the OBD code number? P2017 (Coolant over temperature)?

    You could look at the fan controller, but the downhill thing is a bit different, Could the cooling system contain trapped air?

  4. #4
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    Cooling circuit
    Thermostat starts opening at 89 deg, and is full open at 101 deg.
    Alert 118 deg.

    Wiring diagram, HFX - KFV - NFU engines. Relay at 1500, fan at 1510

    -cooling-circuit.jpg

    -fan-circuit.jpg

  5. #5
    Real cars have hydraulics DoubleChevron's Avatar
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    Add coolant to it .... I bet there is a level sensor in the reseviour that is creating this error message. If the hill is steep it will trip the level alarm.

    seeya
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  6. #6
    Tadpole
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    Thanks everyone. The fan comes on when the warning comes on. Unfortunately this model car doesn't have a temp gage only the warning. Strangely it drives fine on steeper Hills. It is just this one. Thanks for the wiring diagram, I will pass that onto a mate who is going to look at it (I am useless with cars). The coolant is on Max... I am putting in down to being possessed. I will put all your suggestions to my mechanic as he is out of ideas and has another one doing the same coming in this week.

  7. #7
    Tadpole
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    Especially thanks to Seasink. That will be the first port of call

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    Hi Sassy
    Really the only sensible way to go is to look at the system in action with a diagnostic scan tool which will read out the sensors and warning lights in real time as the car is driven. Guessing has not worked and the mechanic needs some help.
    Is there anyone close with a Diabox or Lexia and could help with a look at it ?? A dealer will have the correct tool but are expensive. Many generic scan tools that an auto electrician or mechanic have, do not have the software to read the Citroen EOBD port correctly and get real time information. They usually only get the basic fault codes and reset the light. Some comprehensive expensive tools can be OK. Otherwise perhaps a Citroen/Peugeot specialist shop would be equipped and might be a good alternative.
    Good luck Jaahn

    PS that fault code may not be interpreted correctly either if using a generic scan tool ! It might mean something a bit different ??
    Last edited by jaahn; 23rd August 2017 at 04:59 PM.

  9. #9
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    How old is the battery?.


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