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Chrali
Newbie


Joined: 25 Apr 2018
Posts: 18
Location: Norfolk


PostPosted: Thu May 03, 2018 1:02 am    Post subject: PRND all lit Reply with quote

As promised in my intro post I got my iCarsoft POR II today and checked for DTCs. I have the following:-

DME reported DTC1314
Tiptronic and P2281 (Boost leak between MAF and TB)

These seem pretty common and related, but why would a boost leak concern the transmission?

I'll check the transmission connectors and wiring for oil if the rain holds off this weekend.
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deMort
Reims


Joined: 21 Mar 2015
Posts: 4475
Location: Brighton


PostPosted: Thu May 03, 2018 7:53 pm    Post subject: Reply with quote

Transmission uses the load signal which is generated by the maf .

Do you have any actual running faults or eml light on ?

Ive got a weird hunch this is to do with the pipe by the o/s/f air filter / coolant bottle .. might not be but it rings a bell .. there is a pump there and the pipe going to it is known to crack with age .. i need to look into it more when i have time .. the weekend me thinks .
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Chrali
Newbie


Joined: 25 Apr 2018
Posts: 18
Location: Norfolk


PostPosted: Fri May 04, 2018 12:42 am    Post subject: Reply with quote

Interesting about the trans using maf, never heard of that before.
Gearbox works ok in auto, or in tiptronic using the steering wheel buttons, but not responding to tiptronic on the gearshift. The PRNDL lights take about 20 minutes to all light up. No eml. From what I've found, it can also be the corrugated pipe across the front of the engine, or the y intake etc. I'll take a better look at the weekend as well, but at least I'm a bit more reassured that its nothing terminal. Thanks for the suggestion of where to look.
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deMort
Reims


Joined: 21 Mar 2015
Posts: 4475
Location: Brighton


PostPosted: Fri May 04, 2018 7:49 pm    Post subject: Reply with quote

Usefull diag link about this ..

https://www.yourmechanic.com/article/p2282-obd-ii-trouble-code-air-leak-between-mass-airflow-maf-sensor-and-throttle-body-by-jamahl-walker

Code is 2281 not 2282 that it says in the link .

Its the brake side im thinking about .. it rings a bell but cant place it .. i know the fault with the split pipe but i cant dam well remember the fault codes related to it .. need to have a think about it Bandit
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Chrali
Newbie


Joined: 25 Apr 2018
Posts: 18
Location: Norfolk


PostPosted: Sat May 05, 2018 11:17 pm    Post subject: Reply with quote

Well other codes are now showing after todays drive, the full repertoire.

P2281 Air leak MAF to TB
P2187 System at idle bank 1
P0011 Camshaft position timing over advanced or system performance bank1
P2189 System at idle bank 2

Better get this to a specialist as I have no vacuum testing kit and cannot see anything obvious, but engine seems noisier and I don't want to cause damage. I'll see if I can attach a sound clip / video tomorrow.

To be honest I'm beginning to feel some regret and I've had all manner of 10+ year old big old luxo barges.
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deMort
Reims


Joined: 21 Mar 2015
Posts: 4475
Location: Brighton


PostPosted: Sun May 06, 2018 3:54 pm    Post subject: Reply with quote

Most of the codes are related to an air leak ..

A smoke test is needed first off i think .

The camshaft one is unusual though .. cam solinoid or even old / wrong type of engine oil could be a factor there .

EDIT...

Just a thought but on the Y piece going onto the throttle body there is a pipe in the middle of it .. make sure thats pully pushed home .
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Chrali
Newbie


Joined: 25 Apr 2018
Posts: 18
Location: Norfolk


PostPosted: Mon May 14, 2018 11:38 pm    Post subject: Reply with quote

deMort I fully agree! I've booked it in with a local(ish) specialist who seems to have good reviews. It's also getting the transmission fluid and filter changed, as well as the engine oil. The Y piece is on just fine.

I intend to do these myself in future but it won't hurt to have a receipt for this in the paperwork. The transmission fluid and filter change seems pricey (I had my 760's valve body removed, seals replaced, and OEM fluid and filter for the same cost) , he quoted £540 for genuine Porsche fluid Surprised I've chosen the OE equivalent !
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