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The mkiv Supra Owners Club

help with fault code 34


Parry_10

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I have got an idling problem where the cold idle is fine but when its warm its idles higher(around 1200-1400) It has fault code 34 which says:

turbo pressure malfunction

causes:

actuator(for wastegate valve)

short in vsv for wastegate valve circuit

ecu

 

could any of these cause my idling issue? im sure it isnt the ecu as its only just happened recently and since the idling problem has started i am now gettin fuel cut where i wasnt getting any fuel cut before(i have a hks fcd)

cheers

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no only done it since the boost controller was installed and the boost increased to 1bar then had the car dynoed was ok for a day then ever since then

 

I'd start by double checking the boost controller installation - vac pipes and wiring - I'd also check the wiring of the FCD.

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