Dear all,
Many thanks to you all for lending a helpful hand and contributing to the wealth of knowledge.
Quick background: 1.6 tdi Fabia 2010 on 140k miles, I got the dreaded flashing glowplugs recently - popped up soon after starting the car, associated with limp home mode. It'll go (usually) when I turn the engine off and on, and doesn't always appear. Got some diagnostics done (not VCDS yet) which pointed towards the EGR (according to my googling):
P046C00 Exhaust gas recirculation sensor A circuit range/performance (state: active/static)
P040700 Exhaust gas recirculat.Sensor B Circuit-Low (state: passive/abiogenesis)
My question is how to determine whether it's a valve problem which needs replacing, or a sensor problem? Can either be replaced, must both be changed? I'm not familiar with this part. Some threads indicate that it can be a very costly repair (£1000+), while others suggest the part is not that expensive off eBay and an indipendent can do it in a few hours?
Some guidance would be really appreciated, as I start work in a few weeks and need my car for then. Thank you all for your time!
Many thanks to you all for lending a helpful hand and contributing to the wealth of knowledge.
Quick background: 1.6 tdi Fabia 2010 on 140k miles, I got the dreaded flashing glowplugs recently - popped up soon after starting the car, associated with limp home mode. It'll go (usually) when I turn the engine off and on, and doesn't always appear. Got some diagnostics done (not VCDS yet) which pointed towards the EGR (according to my googling):
P046C00 Exhaust gas recirculation sensor A circuit range/performance (state: active/static)
P040700 Exhaust gas recirculat.Sensor B Circuit-Low (state: passive/abiogenesis)
My question is how to determine whether it's a valve problem which needs replacing, or a sensor problem? Can either be replaced, must both be changed? I'm not familiar with this part. Some threads indicate that it can be a very costly repair (£1000+), while others suggest the part is not that expensive off eBay and an indipendent can do it in a few hours?
Some guidance would be really appreciated, as I start work in a few weeks and need my car for then. Thank you all for your time!