429F Error Message - Mk1 Leon 150PD FR+

[johntheboy]

Had the emmisions/diagnostics light come on and stay on but the car was running fine. Just so happened to be after i was running the car on this new fangled high octane diesel, so im guessing it could be something simple. But if anyone can point me in the right direction id be most appreciative.

Thanks.

 

[BeartheBruce]

Best direction is to get the car scanned by someone with VAG-COM or the equivalent. From there you can begin to troubleshoot the problem.

 

[johntheboy]

Heater plug circuit number one apparently.... any ideas people?

 

[dholdi]

Heater plug number one faulty ? Tho I have read of problems with the loom which could give the error. Change the plug first and see if that resolves it.

 

[johntheboy]

Heater plug number one faulty ? Tho I have read of problems with the loom which could give the error. Change the plug first and see if that resolves it.

This is going to sound really dumb but Ive no idea what it is I'm supposed to be replacing or what it actually is? If anyone can point me in the right direction I'd appreciate it! Thanks!

 

[Bogwoppit]

The Glow plug on cylinder number 1

http://en.wikipedia.org/wiki/Glowplug