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Thread: limp mode

  1. #1
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    Default limp mode

    19. cdti
    car is in limp mode fault code are as follows
    right here are the fault codes:
    P0100 - Intake Air Temperature Sensor Circuit High Input
    (54) - Present
    P0100 - Mass Or Volume Air Flow Circuit Malfunction
    (08) - Present
    P0100 - Intake Air Temperature Sensor Circuit Malfunction
    (21) - Present
    P0400 - Exhaust Gas Recirculation Circuit Low Voltage
    (02) - Present
    P1125 - Throttle Actuator Feedback Circuit Malfunction
    (08) - Present
    P0638 - Electronic Throttle Control Low Voltage
    (02) - Present
    any idears , these lead me to beleave wireing fault or ecu packed in but not sure were to start looking, checked fuses and block connecters and car is booked into auto elecs on thursday but would like to find myself first.

  2. #2
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    Hi,had the same sort of problem myself with my dti,one of the codes po400 which is the EGR valve is i think connected to the other codes as if the EGR fails then other things related to the EGR wont function properly,in my car i took off the EGR valve cleaned it,put it back on and it was still the same,so i took it off again gave it another good clean and sprayed wd40(quite alot) onto the valve where the rod is and cleaned my inlet manifold,put it back together and problem was cured. Prior to this i changed the boost sensor,barometer sensor,air meter,pressure solonoids etc but made no difference. give it a try with wd40.ot might work.

  3. #3
    Regular Member gtr1000's Avatar
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    Vehicle : Insignia

    Trim : Sri

    Engine : 140 Ecoflex S/S

    Year : 2013

    Default

    Have you seen this site for code explanations http://www.obd-codes.com/p0100.

    I'd guess everything hinges around the MAF sensor but that's OMO .

  4. #4
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    i have just replaced the egr with a new one and swapped maf with a known good unit from a friends car still the same faults!!

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