VW Polo 6R 2011 1.2 TDI Flashing Glow plug light and cuts straight out when started.

[jollapotamus]

Hi all,

My Polo refuses to start, if it does start the glow plug light flashes yellow, the engine sounds a little rough and it cuts out after 10 seconds of running.
I have run a scanner on it and was hoping for some advice as to what this could be.
I initially thought fuel injector in bank 3, but that wouldnt be causing the car to cut out after 10 seconds of runnning.

Fault codes as follows:
P0641 - Powertrain - common rail pressure high
P0269 - Powertrain - Cylinder 3 - Contribution/Balance - Faulty fuel injector or glow plugs
P2017 - Powertrain - Intake Manifold position sensor/switch circuit high in bank 1
13178 - Unable to find information on this one
13184 - Shut off valve for gas - high pressure regulator
N372 13174 - Intake air temperature sender 3 G520 Signal too small 16065 - Due to limp mode

Any ideas and suggestions are welcomed as I am a bit stumped!

Thanks!

 

[PetrolDave]

Please post an Auto-scan made using VCDS and which is unedited so we can see the details of these fault codes and how your Polo is equipped and configured.

 

[Crasher]

As I said on the volkswagen forum, could we have the VIN please?

 

[Crasher]

VIN WVWZZZ6RZCU017443

I think your code reader is giving false info, what is it? I get

001601 (P0641) - Sensor Reference Voltage A - Open Circuit - MIL ON

000617 (P0269) - Fuel Injector #3 (N32): Contribution/Balance Fault

18447 (P2015) - Intake Manifold Flap Position Sensor G336: Implausible Signal

13178 (P0341) - Camshaft Position Sensor (G40) - Implausible Signal - MIL ON

13184 (P0322) - Engine Speed Sensor (G28) - No Signal, MIL ON - Intermittent

13174 (P0103) - Mass Air Flow Sensor (G70) - Signal too High, MIL ON

16065 (P0088) - Fuel Rail/System Pressure - Too High, MIL ON (this is via the G47 sensor)

The Sensor Reference Voltage A - Open Circuit is the interesting one, the sensors are powered by the 5v signal on a line called D141 from the ECU on a yellow/blue wire at plug T60 pin 10 so with the EGR valve, fuel pressure sensor, boost pressure position sensor, cam position sensor, manifold flap motor and throttle body disconnected, check on the yellow/blue on pin 1 of the EGR plug for ignition live 5v. If there is no voltage then the ECU is toast, have any of the components mentioned been replaced recently?

The Delphi injectors are becoming troublesome, we have done a few now.

 

[JMR]

Yuck , the dreaded sensor voltage issue. Use search function my friend , there are few posts on how to resolve this issue. Me thinks his scan will not be what s not accepted here ...

 

[iichel]

Yep 5V is dead

 

[JMR]

Yep 5V is dead

Not necessarily...if one of those sensors are shortcircuited..then you have sensor ref voltage error.

 

[iichel]

Yep, sorry, that's what I meant. It is very rare for the 5V input of the ECU to die. The 5V circuit is probably shorted by a sensor or actuator.

 

[Crasher]

It is very rare for the 5V input of the ECU to die.

I have had it twice now on EDC16 ECU's.

 

[iichel]

Given the incidence of twice on how many ecu's you repair, is it rare? Just wondering; not trying to be pedantic.

 

[Crasher]

It is VERY rare for me to change an ECU, only a handful in the last 35 or so years (apart from dozens of Golf 2 8v PB, a few PG G60 and KR 16v). I avoid ECU repair people at all costs and will only fit new genuine UNLESS there is no alternative such as a few weeks ago when a Golf 5 1.6 FSI reported itself as faulty but a new unit was obsolete so we found a used one on fleaBay. Thankfully ODIS makes this a very simple process.

 

[JMR]

So..no resolution to this thread yet..no scan..me thinks he sailed away

 

[jollapotamus]

Hi guys,

Sorry I didnt get any alerts to my email inbox sayingg there was some chatter around this!

I am just using a Bluetooth wireless scanner with the Torque app and a few other Android apps to scan.

It turned out that the guy who owned the vehicle before us removed the DPF and had it mapped, causing the EGR or a sensor to burn out.

Replacement of the EGR has not been carried out as yet, we have remapped the car and is working fine.

Should we replace the EGR valve later down the line as surely this will lead to issues? I know its going to be expensive!

 

[Crasher]

You must reinstate the DPF and EGR or the car is not legal in the UK and SHOULD fail the MOT, that is IF the MOT tester is awake or not corrupt.

 

[JMR]

You must reinstate the DPF and EGR or the car is not legal in the UK and SHOULD fail the MOT, that is IF the MOT tester is awake or not corrupt.

I hear the MOT testers are incorruptible , perhaps shall he tempt him ?

 

[Crasher]

I hear the MOT testers are incorruptible

You must be kidding, many are half asleep and a good proportion so bent they would not know a straight edge if they were shown one... the removal of, in particular, DPF's I feel is why the governments clean air targets haven't been reached and their knee jerk reaction is an ICE ban which is stupid, EV's are not the solution.