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    Mazda BT-50 2017: Why is it dropping into limp mode?

    Mazda Mazda Advice Mazda BT-50 Mazda BT-50 Advice Mazda BT-50 2017

    My 2017 Mazda BT-50 has dropped into limp mode numerous times. It has been to the dealer now six times, each time with a different cause logged on the diagnostic check, including accelerator position indicator, DPF not regenerated, DPF vaporiser solenoid failure, brake fault, and a number of unknowns as the fault is not kept in memory when the ignition is turned off. There is a strong correlation between failures occurring only when the ambient temp is above 28 C, cruise control, highway driving at speed limit, Drive not sport mode. Is this starting to look like a dodgy CPU and/or an engine management software issue, or something else?

    Answered by CarsGuide
    7 January 2018
    Graham Smith

    With so many different causes logged on the diagnostic check you would have to think it’s something like the ECU, but it’s a hard one to diagnose. You really need to have it happen when the mechanic is there to witness it.

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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