New member '08 A4 Avant 2.0tdi 170 problems already!!

[Jamied87]

Hi all, just before Christmas I bought myself the above car and all was going well. However now I have an engine management light on and flashing glow plug light...after speaking to someone and showing them the registered codes they suggested it was an injector loom fault...replaced this at a cost of over £120 and still the faults are there.
Does anyone else have any suggestions thanks

04710 PD Unit Injector: Cylinder 3 (N242): Implausible Signal

04704 PD Unit Injector: Cylinder 1 (N240): Implausible Signal

04720 PD Unit Injector: Cylinder 4 (N243): Regulation Range Exceeded

04711 PD Unit Injector: Cylinder 3 (N242): Regulation Range Exceeded

04705 PD Unit Injector: Cylinder 1 (N240): Regulation Range Exceeded

04713 PD Unit Injector: Cylinder 4 (N243): Implausible Signal

01651 Cylinder 3 Glow Plug Circuit (Q12): Electrical Fault

01652 Cylinder 4 Glow Plug Circuit (Q13): Electrical Fault

12546 Motor for Intake Manifold Flap (V157): No Signal

05214 *Mass Air Flow*during Regeneration too Low*

13171 ????

[Rob69]

I've had to replace a few of the intake manifold flaps ( V157) on 1.9 pd engines, that could be giving you the 12546 and 5214 codes. I'm presuming whoever replaced the loom cleared the original fault codes and they have all since come back?you need someone with vcds to see what the injectors are doing.