P246F and P0674 Combined Error

[adam2505]

HI Guys,

To the genius' on here I'm looking for some advice please. 2009 B6 with a CBAB Engine, 124k miles.

Got the EML Light driving to work ( cold start - first use of day ) but no detriment to power, economy and no strange feeling/sounds/response from car.

I've plugged VCDS in and have the following errors ( abridged ):

009327 - Exhaust Gas Temp Sensor 4 Bank 1
P246F - 000 - Implausible Signal - MIL ON

AND

001652 - Cylinder 4 Glow Plug Circuit (Q13)
P0674 - 000 - Elextrical fault.

Both of these errors cleared and the car worked fine for 2 days then repeated under same conditions, with same errors.

Repeated clearing ( ignoring ) of the problem isn't the way I want to go, I think that Exhaust Sensor has a hand in DPF functions that cease whilst MIL is illuminated. Want to look after the car so Mobile Mechanic booked.

In the meantime mostly for my own education to be a little forearmed, could someone shed any light on why these codes are tripping together as they are seemingly separate systems?


Thanks Very Much