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[Zafira B] [05---] P0115, what could be the problem for the error code?

Discussion in 'Astra, Corsa, Zafira, Meriva, Adam, Agila, Tigra & Nova [Includes AstraVan & ComboVan] owners forum' started by errigle, Oct 10, 2011.

  1. errigle

    errigle Member

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    Location:
    Belfast
    Drives:
    Zafira B
    Hi guys, a couple of months ago we have got our first Zaffy (1.8 Design 2010).

    Its started to have a few problems starting (sometimes takes a few seconds more than normal, sometimes will struggle to get past 500rpm, and other times it will struggle and then hit say 1500rpm and finally go back to idle). Ran the pedal test and I'm getting 0115 code which I know is related to engine coolant etc. What could be causing this, and any suggestions on what to look for. I've read about replacing the cts (whats involved?), and checking the coolant ecu behind the bumper. I haven't checked any of this yet but just wanted suggestions first but I get the hands dirty.

    Thanks ( and if i've left any information out please let me know)
     
  2. Fire26662

    Fire26662 There can be only one.

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    These can suffer with plugs if you drive short distances, maybe a good idea to check the grade and change them for hotter running ones. The ECT can cause problems, but they normally also affect temp gauge readings (if fitted) and the cooling fans normally run all the time, it is also more usual to suffer hot starting problems. With all that in mind, the best advice I can give you, is to have the fault code erased as you don't know if it is active (present) or stored (not present), whilst it is hooked up to whatever diagnostic system you use, check the live engine temp, from cold to fan cut in, if everything looks good, then the code means nothing.
     
  3. errigle

    errigle Member

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    Location:
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    Apologies Fire, I should have mentioned that most times the engine fan will start as soon as the engine is turned over, but it definately runs sometimes even when the Zaffy is driven short distances (like 5-10 mins). We have only noticed the starting problems when cold but I think once it has done it when the engine was hot. It's done 20k in it's first year (it was brought from the mainland to here in NI), but we only do short drives (maybe 20mins at a time). I have no diagnostics system, and like most people i.e. tightwads don't want to take it to the stealers (especially since I prefer to do things myself).

    It makes sense what your saying about the error code meaning nothing if the engine temp is fine, but any other suggestions as to why the engine starts a bit lumpy and sometimes runs lumpy??

    P.S. No temp guage fitted but I've had no warning lights about the engine temperature
     
  4. Fire26662

    Fire26662 There can be only one.

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    Well yes it could still be the ECT, but as I said these can suffer with plug fouling issues on cold starts, so may give you a bit of rough running or a misfire from 1st start, and if it is the case it will get worse, the only option is to change the plugs to a hotter 4running grade. If you are like me and a tightwad (plus don't trust the garages) you may be better off investing in your own OPCOM, they cost about £30 or thereabouts (no idea what it is in Euro's), and you can et them from Ebay or such.
    They will pay for themselves the very 1st time you use it.
     
  5. errigle

    errigle Member

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    Location:
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    Drives:
    Zafira B
    Thanks, I just ordered an opcom off eBay, and i'll reset the error code and change the plugs. Hopefully that will sort it.

    Thanks for the help
     

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