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VW Polo 1.4 AUA 2001 - Codes 17566 map sensor, 17961 & 17912 intake air system leak #

Posted by Dave Marshall on August 1, 2007, 11:25 am
Message modified by board administrator February 3, 2009, 12:20 pm

codes 17566 map sensor implausible signal,17961 barometric /mapsensor implausible relation and 17912 intake air system leak detected come up at random [approx twice in 10 mile roadtest] previous to this cambelt tensioner collapsed,head off,valves taken out and checked because some kissed piston none bent [so i,m told,] i didnt do engine repair but car seems to run ok and valve timing has been checked since and is ok.launch x431 diagnostic tool allows me to look at map sensor output whilst on road test and when engine management light comes on trace doesnt seem to do anything silly,not sure how to go about this one,done the obvious like checked wiring not rubbing etc.Anyone either had this problem or has suggestions on verifying map sensor output is ok I would be very grateful.

Re: vw polo 2001 1400 aua

Posted by Dave Harney <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT2603' width='330' height='300' border=0 style='border:none;'> on August 1, 2007, 1:40 pm, in reply to "vw polo 2001 1400 aua"
Dave Harney

Hi Dave,
Has a compression test been done ? I know you say engine seems to run ok, but what about EGR as well !

Regards
Dave

You can trim a sheeps wool many times, but you can only fleece it once !

Re: vw polo 2001 1400 aua

Posted by DAVE MARSHALL <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT1372' width='330' height='300' border=0 style='border:none;'> on August 1, 2007, 9:51 pm, in reply to "vw polo 2001 1400 aua"
Dave Marshall

HI DAVE
JUST GOT IN AND READ YOUR SUGGESTIONS,A COMP TEST HAS BEEN DONE,ALL FINE,ROAD TESTED CAR WITH VACUUM GAUGE IN FUEL PRESSURE REG PIPE EARLIER,READING DIPPED TO 15 INCHES OF MERCURY FROM 22 ON OVERRUN AT ONE SECOND INTERVALS,COULD BE EGR WORKING BUT NOT SURE,WILL BLANK EGR OFF TOMORROW AND SEE WHAT HAPPENS AND THEN REPORT RESULTS
THANKS FOR RAPID RESPONSE
REGARDS DAVE

Re: VW Polo 1.4 AUA 2001 - Codes 17566 map sensor, 17961 & 17912 intake air system leak #

Posted by Ainsley Brader <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT1790' width='330' height='300' border=0 style='border:none;'> on April 28, 2009, 12:37 pm, in reply to "VW Polo 1.4 AUA 2001 - Codes 17566 map sensor, 17961 & 17912 intake air system leak #"
Ainsley Brader

Did you ever find a cure for this one?
I have similar problmes on a identical car
Polo 1.4 AUA 2001.

Customer complains of loss of power and dropping into limp mode. HE also thinks it runs ok with management light on but when the epc light comes on as well thats when it runs a lot worse!

Vehicle has been to a couple of different garages and had new map sensor and throttle body. An additional earth has been added to the throttle body by someone too.

I have had ECU tested, have tested compression and cambelt, earths on bulkhead checked and cleaned.

With a snap on Modis car returns
17566 (p1158) Manifold pressure sensor, not a plausible signal, intermittent
17950 (p1542) Angle sensor throttle motor not a plausible signal, intermittent

Thanks

Re: VW Polo 1.4 AUA 2001 - Codes 17566 map sensor, 17961 & 17912 intake air system leak #

Posted by jamie lambert <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT1460' width='330' height='300' border=0 style='border:none;'> on April 28, 2009, 11:19 pm, in reply to "Re: VW Polo 1.4 AUA 2001 - Codes 17566 map sensor, 17961 & 17912 intake air system leak #"
Jamie Lambert

Hi Ainsley and Dave
Dont know if this is any help and you may of done it, but i had Seat with same codes (i think it was a few years back) and it just wanted the throttle body re-adapting. Hope this helps.

Regards Jamie

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