Power cutting out

Post by **TopBear** » Sun Sep 23, 2007 10:01 pm

My car seems to be misbehaving today. Been running fine recently then today I started it, and gave it slight revs on the accelerator as I was reversing and it almost cut out completely. Only able to drive it by basically increasing the revs very slowly, anything more and it cuts the power like its got a 'choke' out.

Got these codes from VAG-COM

16621 - Manifold Pressure / Boost Sensor (G31): Signal too Low
P0237 - 35-00 - -
16490 - Manifold / Barometric Pressure Sensor (G71) / (F96): Implausible Signal
P0106 - 35-00 - -

Anyone any idea?

Post by **TopBear** » Sun Sep 23, 2007 10:13 pm

Found this link after some Googling, seems to indicate a faulty MAP (not MAF) sensor.

Is this a diy job to replace, or should I get (another) job lot of vaseline in?

Post by **Philws4** » Sun Sep 23, 2007 10:18 pm

This any use to you!!

http://wiki.ross-tech.com/index.php/16490/P0106

Post by **TopBear** » Sun Sep 23, 2007 11:15 pm

Yep, seen that also, the common denominator of both faults seems to be the manifold sensors... no?

Also is there any general guide to the text parts:- Signal too Low, Implausible Signal, 35-00 of the fault

Post by **Philws4** » Mon Sep 24, 2007 8:24 pm

Not that i am aware of, but try sending UWE at ross-tech an e-mail or pm as he should be able to help you out.

Post by **TopBear** » Mon Sep 24, 2007 10:59 pm

Cheers Phil, have pinged him an email.

I've done some logging on VAG-COM whilst the car was stationery, just gentle revving, to see if there are any clues there.

anyone notice anything strange???

Post by **yorkie** » Tue Sep 25, 2007 9:10 am

G31 is the boost sensor which sits in the top of the tbb. Easy to change although getting the old clip off is a bit of a bugger. Expensive to buy though, think I paid around 100 quid. Buy the proper hose clip too, only about 30p.

F96 is in the ecu and I'm not sure if it can be changed as a seperate item but I'm sure someone on here (probably Doug) will.

I think I have a spare G31 as I replaced mine when it wasn't actually the problem.

I will have a look today for you.

Post by **TopBear** » Tue Sep 25, 2007 9:55 am

yorkie wrote:I think I have a spare G31 as I replaced mine when it wasn't actually the problem.

I will have a look today for you.

Cheers fella, Your right enough, I was quoted £88 inc VAT from my local Audi dealer, whilst VAG-Parts are charging £48 inc delivery for the same part.
I did think about posting up, to see if anyone had one spare, but really didnt think there would be, so I've ordered a new G31 from VAG Parts but its gonna take a week to get here, as its a special order part.

Post by **ChipHazzard** » Tue Sep 25, 2007 9:57 am

drop S4woody or tombs a pm for a price on the sensor

Post by **TopBear** » Tue Oct 02, 2007 5:38 pm

New MAP sensor arrived today and now fitted (2 min job, literally).

Car is now working 100%....thank god

Both DTC's now gone, so can only assume the 16490 has a dependency on the 16621 code.

Post by **mikeyquattro** » Tue Oct 02, 2007 11:07 pm

TopBear wrote:New MAP sensor arrived today and now fitted (2 min job, literally).

Car is now working 100%....thank god

Both DTC's now gone, so can only assume the 16490 has a dependency on the 16621 code.

Aint it a lovely feeling when it all goes to plan!!

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