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Matt
Matt, Mechanical Engineer
Category: Vauxhall
Satisfied Customers: 20592
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Why does my vauxhall insignia loe power when the " service

Customer Question

why does my vauxhall insignia loe power when the " service soon" appears? it is automatic diesel
Submitted: 10 months ago.
Category: Vauxhall
Expert:  Matt replied 10 months ago.
Hello if its going to a limp home / low power mode then I'd say that there's a faulty engine sensor or its showing an issue The fault can be something quite simple and nothing that’s going to stop the car to something quite major that will reduce engine power and possibly stop the engine The ECU senses this and may put the car into 'limp home' mode which typically limits the revs and the amount of power available. Usually the car is safe to drive for a short distance as the mode is intended is intended to get you home without incurring any engine damage The quickest route to repair is to have the car plugged into a diagnostic machine which will read off the fault code stored in the ECU (providing the light is still on at this point) and indicate which sensor has failed or whether the fault is more serious.

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