Charge glow light coming on at high revs

[Davis XI]

I've recently got myself a 2016 Audi A3 Sportsback. The car feels ok apart from if I give it high revs in sports mode the glow plug warning light starts flashing. It doesn't happen in economy mode. When I pull over, turn the car off and then restart it I get a warning about the start-stop function not working. Once home and the car has been left for a while the car in fine.

Has anyone got any idea how serious this is?


Thanks

[Crasher]

You need to start with a full car code read, preferably one VAG group specific as generic code reads can confuse.

[Davis XI]

Thanks, I've checked with Audi and they want the car for 2 days and £360 to diagnose the fault ��!

[gareth23]

Any independant VAG specialists in your area? My local one charges something like £100 to scan the codes and give an estimate of whats needed and cost.

Or if you're thinking of getting a copy of VCDS for this and future use you can get the 3 car version for less than £200

[futtret]

less than an hours work to get a local garage to run a diagnostic scan & give you a printout of the fault codes that arise.

I have a 2015 2.0 TDI with 43k miles.
Had both warning lights (coily symbol & engine block symbol) on for over a year.

Because of the fault code provided to me, I replaced my cylinder 3 glow plug (which has a sensor built into the glow plug), £200 including labour. However, it could be any of 3 sensors on that system.

[swalker]

OBDeleven - VAG licensed so will give correct code read, they are as cheap as £50, great glove box hero and you can go on to configure other things while you have it
could be any number of things so a code read is a must.

[Davis XI]

I took a punt and added some Redex DPF cleaner to the tank which has fixed the light coming on at high revs issue. I will look into getting a proper clean done in the near future.

[Davis XI]

After a few weeks, the dreaded glow plug light reappeared so I finally took it to my local garage for diagnostics. Error code P164B00 - Oil pressure switch malfunction. Has anyone come across this error before and is it easy to replace?

[Crasher]

Yes it is common, the one we did last week had to be accessed from below, and some have two so replace both.