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Matt
Matt, Mechanical Engineer
Category: Volkswagen
Satisfied Customers: 22640
Experience:  BEng hons Mech engineering, in auto industry 22 years
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If the engine management light comes on with what appears to

Customer Question

If the engine management light comes on with what appears to be a coil light at the same time and the engine then reduces power, is the only solution to resort to a having a new management system installed at a cost of £800 + ? I have been quoted £1200 by a Volkwagen dealer, or about £800 by a local garage if I want a genuine unit that will last, less if I was selling the car.
Submitted: 11 months ago.
Category: Volkswagen
Expert:  Shantal-Mod replied 11 months ago.
Hello,
I'm Shantal and I'm a moderator for this topic.
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Shantal
Expert:  Matt replied 11 months ago.

hello

that seems a little extreme

On any car if you get a check engine light or other fault light this typically means one or more of the sensors has failed or has a faulty connection.

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.

can you tell me what fault codes have been pulled off the car?

Expert:  Matt replied 10 months ago.

Hi
do you still need help?
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