Hi i've taken my Audi A3 Diesel for a problem with yellow Glow Plug warning light flashing intermittently the codes came as Exhaust Flow Sensor my mechanic said he'd reset the cars computer just to see if it was a glitch any way still came on so he went a head and fitted new sensor but unfortunately it started flashing again today , took it in and he's scratching his head said he'd look into it , is there anybody on here who's had a similar problem and could shed some light on it ?  Code description  " Trouble codes 5265 / ( Original trouble code : P242C00) Exhaust-Gas Temperature Sensor 3 (Bank 1)

Cheers Dave

Hello David,

Sorry I can help you directly with codes, but it’s not unusual to change highlighted faulty components, only to find the fault still exists.

Since your mechanic is scratching his head, I take it he is not a diesel specialist, and if not, my port of call would be to find yourself a trusted local diesel specialist and entrust the diagnosis and repair to them - not an ‘ordinary’ non diesel garage. 

You can usually get recommendations on diesel specialists by asking at your local taxi rank.

Kind regards,

Gareth. 

Thanks Gareth will do.

Kind Regards Dave

Just an update , it turned out to be a short on the wiring loom , apparently modern wiring is very thin and can rub and wear out , they also replaced 3 sensors but reading between the lines it was the short , anyway  problem seems to have been sorted .

Glad the problem is resolved 🙂