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Throttle code P2135 and p0121

Hello Rennlisters,

i have a dilema on a 2001 Porsche 996 turbo, running GT660 EVOMS tune with 1050x injectors, K16 billet turbos,Hitachi Mass Air, Catless Exhaust, intake tubes off Turbos. Car has been pulling codes P2135 and P0121, thought it was Pedal Potentiometer, so had it replaced. Drove home and it still comes back. Not that this is related, but I am also getting codes P0051 and P0151 as well regarding o2 sensor area. Pedal will go into limp mode and open 30 pct on wide open throttle.

Has anyone experienced this, iif so how did you resolve it?

Thanks,

Steve

Clean the throttle body out with electrical cleaner then do the throttle adaption.

Thanks for your reponse will give that a try.

Unplug maf and drive it. If it’s running better install a new oem Bosch maf.

Just repaired a 2004 GT3 with the same codes. The wiring harness for the MAF had rubbed through on the power steering pulley causing a slight short. The red/blue wire powers up a lot of components, strange it only threw these two codes.

Fraazz