Morning All,

 

I am trying to diagnose a problem that my parents are having with their Fabia. The car will every few days go into limp mode. Car wont go above 2K rpm. A local garage suggested that it may be a faulty injector on cylinder 1. When I plug an OBD2 readr into the car I get an error on cylinder 1 so I initially thought that they were right and we might have a bad injector. The thing that strikes me as a bit odd is that this is only happening every few days or so. the rest of the time the car runs perfectly. 

 

Has anyone had a similar issue and managed to figure out what the cause was. My parents are relucant to sink a load of money into buy new injectors if they don't need it. If anyone can offer any advise I would be very grateful.

 

Cheers

Did you delete the code and if so did it return?

 

First thing I would, just about always, do is check is the car battery's state of charge and health and onto alternator operation just to be sure, if you have a better scan tool, rather than just a code reader, as it's quick, easy and you don't get your hands dirty and can do it inside car or home warm and dry.

 

Also check the batteries connections, cables, earths are all in good condition, clean, secure and protected.

 

If you don't have that sort of scan tool then it's the old multimeter or access to a proper battery tester.  You really need to test the battery under load as it might give reasonable figures just sitting there doing little.

 

If the battery is low don't be tempted into a quick high charge (not booster either) a longer, slower, lower charge with get deeper. Although car batteries are one of the most oversold car parts when many could be successfully revived if your parent's car battery is original or old then you will save them and you more hassle by changing it to a good quality new battery.

 

If it's not the battery causing or contributing to the problem more information will be required, an error code on anything can have lots of causes and not necessarily directly related to where the error shows.  An error code is where you start your diagnostics from and often not where it ends, just replacing parts that show an error code can often be shooting the messenger, particularly from a simple code reader and dealing with generic codes.

 

Edited 31 March, 20224 yr by nta16
spelling

I have come across this issue with a mates 1.9 TDI and it was the wiring loom that supplies the injectors with the signal to squirt the fuel into the engine kept coming up on his as cylinder 3 when going into limp mode, was hard to find as you said would go fine for a few days then wham would not rev or pull, at first we thought it might be the turbo pressure switch playing up but both of them were renewed and we made sure turbo arm wa free and turbo was boosting ok, a friend of mine told me a Skoda garage had a few issues with the loom and we replace his with a used one and this has seemed to cure the limp home issue