Engine & Gearbox Ecu code p1236 CR-V going into limp mode at high revs

Discussion in '2nd Generation (2002-2006)' started by JamesBG, Sunday 22nd Feb, 2015.

  1. JamesBG New Member Getting Started

    England James Goole
    2
    Hi, when i go over about 3500 revs my CR-V goes into limp mode and the engine management light comes on, ECU is giving code p1236 which i think has something to do with pressure at the fuel pump? Anyone any ideas ? Its a 55 plate 2.2 cdti

    Thanks
     
  2. DeviateDefiant Co-Founder Staff Team

    United Kingdom Leo Northants
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    I've read about this issue in the past, it's normally due to excess carbon build-up. When was the fuel filter last replaced? I'd also check and clean the EGR valve, the turbo vanes and use some fuel system cleaner for good measure.
     
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  3. Ichiban Founder Staff Team

    England CJ Leeds
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    Wrong advise mate, first check if you have the a original fuel filter installed that is 99% due to a clog filter or a non genuine filter.
     
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  4. DeviateDefiant Co-Founder Staff Team

    United Kingdom Leo Northants
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    I did mention the fuel filter first as it's the most likely :Smile:
     
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  5. Ichiban Founder Staff Team

    England CJ Leeds
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    The rest isn't required thou.
     
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  6. DeviateDefiant Co-Founder Staff Team

    United Kingdom Leo Northants
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    I've read people having replaced the fuel filter to no avail and finding that the EGR and turbo vanes are clogged up with carbon deposits. Also common on the 1.7 I-CDTI.

    Either way, OP has something to go on :Smile:
     
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  7. JamesBG New Member Getting Started

    England James Goole
    2
    I'll check the fuel filter although it was replaced 3 months back with a genuine part, will have a look at the EGR valve as well. Many thanks for the responses, will post again when I've had a look
     
  8. DeviateDefiant Co-Founder Staff Team

    United Kingdom Leo Northants
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    That's the reason I asked, I've read about it a few times now. Let us know how you get on :Smile:
     
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