Hi,

Last week the engine management light came on, so I took it to the garage. Took them almost 2 hours to access the engine via VAG-COM, when they finally managed it, the car showed no faults, disconnected VAG-COM, switched car back on and the engine management light had gone off. My car is a 2000 'W' Fabia 1.4 16v (not sure on the engine code).

Now that has me puzzled, can anyone shed some light as to why this happened?

Cheers,

Chris

Engine Management Light is back on.

Edited 18 March, 200917 yr by chrisw880

Is there something where depending on the type of light that a certain number of car starts without the issue causing a problem will reset the light.

When you say the garage used VAG-COM, is that your interpretation or is that actually the tool used?

Main Dealers use VAS and many independant non VAG specialists use generic code readers.

When you say the garage used VAG-COM, is that your interpretation or is that actually the tool used?

Main Dealers use VAS and many independant non VAG specialists use generic code readers.

The garage I use is a VAG specialist.

The garage I use is a VAG specialist.

Doesn't answer the question though. Shouldn't take 2 hours to get a read using orginal ross-tech lead/software or VAS.

auroan ask symonevans he tried and access the engine for faults last month and he couldn't access the bloody thing

Do you have an aftermarket radio fitted? I have to remove the fuse for the radio before vagcom will work properly. I don't have the power down the k line problem, I disconnected the appropriate wire, but something weird is happening.

auroan ask symonevans he tried and access the engine for faults last month and he couldn't access the bloody thing

Thought you said you used a vag specialest garage ? eh, something doesn't add up ?

symonevans had a look as my garage was busy and unable to look at it in such short notice

Do you have an aftermarket radio fitted? I have to remove the fuse for the radio before vagcom will work properly. I don't have the power down the k line problem, I disconnected the appropriate wire, but something weird is happening.

I do have an aftermarket radio fitted

Right..... disregarding the porky about the garage scanning the car and the issues scanning..... the engine management light will go out if who ever scanned the car for faults cleared the DTC. The light will come back on as soon as the fault re-occurs.

What should have been done is a full scan without initially clearing the DTCs, then you could see what DTCs were thrown up. Then clear all DTCs and go for a drive. Do a full scan again and you'll see what the real faults are.

The full VAGCOM is pretty good at telling you in what is at fault regards sensors etc.

Lol, I couldnt access the "engine" to read for faults. It wouldn't sync up, but on mine its fine

what version of vagcom do you have ?

Lol, I couldnt access the "engine" to read for faults. It wouldn't sync up, but on mine its fine

Did you get a message about unknown protocol 3c3c or something. Also could you access some of the other controllers, such as instruments?

Did you get a message about unknown protocol 3c3c or something. Also could you access some of the other controllers, such as instruments?

Yeah could acces other controllers. Turned his anti hi-jack on

What version of Vagcom is it ???????????????????????

Got the car back, and the only fault which turned up (again, after he had to reprogram it) is incorrect controller module.

He also recommened that I disconnect the aftermarket radio for a while and see how it runs.

Lack of comms may be down to the use of a 'dumb' lead, you need to set the buad rate to 9600 to access the engine ECU in the 16V cars.

Ross-Tech: VAG-COM: Issues

The 'no codes' experience may be the same as I experienced with the 2001 16V Fabia Auto we had.

MIL light would come on and go off at random, scanning the car showed no codes.

Eventually the MIL light stayed on when I got home on the drive so left the engine running and scanned the car, got a engine coolant temperature sensor code.

Replaced ECT sensor and no more MIL.

Coolant temp. sensor has been replaced