Reduced power on start up & glow plug light

[SP36]

Hi all,

 

I have a 2013 MkIII Octavia VRS 2.0 TDI.

 

Of recent months my car has had reduced power as if in limp home mode on start up.

I initially thought this was me being premature turning the key and the glow plugs not being sufficiently warm. This is accompanied with a flashing glow plug / coil symbol and occasionally the engine management light.

 

Usually to solve this all is needed is a short 60 second drive in the reduced power, ingition off, key out, key in and start her up again. The fault usually clears, as does the symbols and power is back.

 

This seems to be happening more regularly so I brought a OBD code reader. I have attached a screen shot of the fault codes displayed.

P0236 relating to the turbo boost pressure sensor

P002e(7d) relating to the exhaust camshaft profile

 

Over the last week I have replaced the Turbo boots pressure sensor. Also the oil ran low (naughty I know, hadn't checked it in months) so topped it up with the correct specification oil.

 

My next port of call is the exhaust camshaft profile.

 

Has anybody experience with a similar issue & how it was solved? 

Is there a camshaft sensor I can replace & if so where is it located? Is this an easy DIY job?

Any other solutions or route causes of this issue?

 

My apologies if this is detailed elsewhere on the forum. I did use the search feature but couldn't find anything.

 

Thanks in advance.

Edited 16 February, 2020 by SP36
No car information

[DEZMONDE]

SP36, by any chance are you running a tuning box?

These have been known to throw up faults, especially in the colder weather.

 

[SP36]

No tuning box. No remap either as far as I am aware - I'm the second owner.

 

It's been fine again the last few days. It seems to be when the temperature drops.

 

I have it booked in for service on Monday. I'll mention it so hopefully they can shed some light. 

[cheezemonkhai]

They’ll probably suggest a new turbo...

[SP36]

Geez! I hope not!

[cheezemonkhai]

1 hour ago, SP36 said:

Geez! I hope not!

To prepare yourself look up a thread on mr muscle turbo clean.

[SP36]

I prefer cillit bang for such tasks.

[SP36]

So it went in for Service with a reputable VAG specialist here in Birmingham where a diagnostic was carried out.

They advised the car is occasionally lazy on start up but couldn't find a specific issue. They said the problem may not specifically be caused by the sensors detailed in the above screen shot & their fault codes.

I was basically told not to worry unless it gets worse.

 

However, I'm now pretty sure it is temperature related. I noticed the last few times it has occurred that the temperature was pretty low. Today in Birmingham it has snowed so when I returned to the car I expected it to occur. I made sure I let the instrument panel lights go out before starting the car & low and behold, it happened. The car started in reduced power mode which cleared after a short drive & restart.

 

Could it be a glow plug dying? Any ideas/ advice?