Hello there.

Recently had the check engine light up on my 2004 TDI Skoda Fabia. Friend of mine had a code reader and found two faults apparently.

First one is 17911 Load Signal From Alternator Term. DF:

Implausible Signal

Second is 17571 Fuel temp sensor short to +ve / open error.

Previously there also have been recent problems where I had to replace the battery for being drained and front lights several times for burning out.

From what I've read both faults can be led back to faulty wiring or connector issues but the other problems make me believe the issue could be also with the alternator.

Any way to check the cause without replacing parts?

17911 may be a failed or failing voltage regulator on alternator or alternator itself. Check the wiring to it and also both the exciter wire and the one that goes to ecu. Check as well what voltage you are getting when car is running. Have had one in past that failed and was putting 15-18v output. Also check fuse box in engine bay for any signs of corosion/burnt terminals.

Alasdair

17911 will certainly be a broken wire one side or other of the black 2-way connector pair on the bracket near starter motor. Access from beneath.

That doesn't tend to put fault lights on other than ASR warning light 10 mins after startup, where fitted.

Fuel temp sender is at front of engine, high up, I seem to remember.