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Vauxhall Astra 1.7 Z17DTi 2005 - Drops into limp, codes P0234 & P0070 #

Posted by James Peck on June 20, 2012, 9:13 am

Year of Manufacture *: 2005
Engine Size and Code *: 1.7 z17dtl
( Optional ) Scanner Used: tech 2
( Optional) Fault Codes: p0234/p0070

Hi

! have a astra h 1.7dtl drops into limp home when full boost is required permanent fault code p0070 ambient air temp(ignoring for now)
the code that concerns me is p0234 boost press control positive deviation ( low boost)
turbo waste gate free,vac pipes/ solenoid & vac good actuator test gives full boost
ecu seems to only switch solenoid and supply vac to waste gate on over run throttle off ???
car can be driven with Mitty vac on waste gate (vac on)and archive 1.5 bar off boost
any ideas ?
ecu seems to be giving wrong command ?

Re: Vauxhall Astra 1.7 Z17DTi 2005 - Drops into limp, codes P0234 & P0070 #

Posted by Phil Cake <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1048' width='330' height='300' border=0 style='border:none;'> on June 20, 2012, 5:30 pm, in reply to "Vauxhall Astra 1.7 Z17DTi 2005 - Drops into limp, codes P0234 & P0070 #"

Hi James, We recently fixed one (had loads of miles on)Inlet manifold was so blocked up you could barley put an bic pen through the opening.
EGR valve was showing partially open on component functions and other misleading readings. Vauxhall tech.help line were no good sending my guy up the garden path. Worth checking

Re: Vauxhall Astra 1.7 Z17DTi 2005 - Drops into limp, codes P0234 & P0070 #

Posted by Steve Harrison <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1363' width='330' height='300' border=0 style='border:none;'> on June 20, 2012, 7:21 pm, in reply to "Re: Vauxhall Astra 1.7 Z17DTi 2005 - Drops into limp, codes P0234 & P0070 #"

James

From memory I think there may be a software update for this code (P0234).

Steve

Re: Vauxhall Astra 1.7 Z17DTi 2005 - Drops into limp, codes P0234 & P0070 #

Posted by james peck <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2791' width='330' height='300' border=0 style='border:none;'> on June 22, 2012, 10:09 am, in reply to "Re: Vauxhall Astra 1.7 Z17DTi 2005 - Drops into limp, codes P0234 & P0070 #"

thanks for replys
another intreasting possibility tried to see if up date avaiable with tech 2 only to find ecu lists a differant chassis number to car ????
now wondering if ecu has been swapped & is the car a z17dth or z17dtl

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