Fault code P1555 - Fiat Ducato 2.3 Tracker

TurningWorm
TurningWorm Forum Participant Posts: 1
edited May 2016 in Motorhomes #1

I have a Fiat Ducato 2.3 JTD with manual gearbox. A warning light flashes on start-up and continues throughout the journey.  The manual states that this relates to an automatic gearbox which I do not have. I have had a diagnostic check which states the following
"Fault code P155 Accelerator brake feasibility, Signal not valid. Intermittent". Has any other member come across this problem or can anyone suggest what this could mean?

Comments

  • Randomcamper
    Randomcamper Club Member Posts: 1,062 ✭✭
    500 Likes 1000 Comments
    edited May 2016 #2

    If you look at the post by "Brambles" he lists some fiat fault codes.

    http://forums.outandaboutlive.co.uk/forums/Motorhomes/Motorhome-Matters/fiat-fult-codes/34434/

    Most of the generic fiat codes seem to begin P0xxx

    If yours is a P15x  it would appear to be a specific code relating to speed or control of the vehicle, as indeed your diagnostic check has indicated.

    I have never had a Fiat but have had a Disco 3 and an Audi TT.  Both suffered problems (lowering suspension & engine management light respectively) when the brake light switch (up behind the brake pedal) became faulty. On many modern vehicles apparently
    operating the brake & clutch provides a signal to the ECU so the computer "knows" what you are doing.

    On both cars it was relatively simple and cheap to change the switch. Might be worth a go.........?

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