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VW Golf GT TDi 2.0 CFFB 2010 - Rough running, code P0121 throttle position sensor - Unresolved #

Posted by Paul Chard on December 6, 2016, 3:55 pm

Year of Manufacture *: 2010
Engine Size and Code *: 2.0 CFFB
( Optional ) Scanner Used: vag-com & solus
( Optional) Fault Codes: P0121

Hi we have this golf in with us. Customer complaining of rough running from cold and no power, once it warms up it is perfect all day until the following morning then it plays up again.we have plugged scanners in and only code we get is p0121 throttle position sensor.not sure why this would only upset running when cold or are we missing something.is there any sort of temperature sensor built into throttle unit? any help would be grateful.

Re: vw golf gt tdi

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on December 6, 2016, 4:22 pm, in reply to "vw golf gt tdi"
Kevin Apps

Paul

What is live data telling you ?

Kev

Re: VW Golf GT TDi 2.0 CFFB 2010 - Rough running, code P0121 throttle position sensor #

Posted by francis bennett <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3809' width='330' height='300' border=0 style='border:none;'> on December 7, 2016, 3:58 pm, in reply to "VW Golf GT TDi 2.0 CFFB 2010 - Rough running, code P0121 throttle position sensor #"
Francis Bennett

just checked the code that is a improbable fault code maybe your fault is some were else egr? I mean the throttle is only there for egr operation? I would be checking throttle position when egr is actuated.

Re: VW Golf GT TDi 2.0 CFFB 2010 - Rough running, code P0121 throttle position sensor #

Posted by Paul Chard <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3747' width='330' height='300' border=0 style='border:none;'> on January 30, 2017, 8:31 pm, in reply to "Re: VW Golf GT TDi 2.0 CFFB 2010 - Rough running, code P0121 throttle position sensor #"
Paul Chard

Just thought I would keep you updated customer needed car back so haven't fixed problem yet but is coming back in soon will keep you informed of progress.

Unresolved #

Posted by Paul Chard on February 12, 2017, 4:29 pm, in reply to "VW Golf GT TDi 2.0 CFFB 2010 - Rough running, code P0121 throttle position sensor #"
Edited by board administrator February 15, 2017, 8:55 am

customer has decided not to carry on with more investigations as its not bad enough.

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